Thermal resistance type isolator, the two-wire or three-wire system resistance signal is converted into 0/4~20mA current signal isolation or 0/1~5V voltage signal output. It is intelligent, can through the computer scope of heat resistance index number range and configuration.  <br>This 5v to 24v signal converter should be supplied power independently. Input circuit, output circuit and power supply are each galvanically isolated. <br> <br>Advantages of CZ3000 temperature signal conditioner <br>24V DC independent/ loop power supply <br>Line fault detection(LFD) <br>Configurable by software <br>Integral CJC on terminals/TC input terminals <br> <br>CHENZHU has got intergraded management service Certificates, like ISO9001, ISO14001 and ISO45001, more than 135 patents related core tech was obtained, reference OEM and ODM customers from German, Japan and direct shipments to any global destinations. <br>#CHENZHU <br>[a]https%3A%2F%2Fwww.chenzhuisolator.com%2Fproducts%2Fcz3000-temperature-converter-signal-conditioner.html[/a]

DO SIS Signal Input 24V DC 5A Safety Relay <br>These safety relay are suitable for the application of E-Stop button, safety gate and DO signal from SIS, with several contacts output. <br> <br>The emergency stop safety relay can be operated in single or double channel mode, manual or automatic reset, and with the function of monitoring the short circuit between channels. <br> <br>Features &amp; Advantages of DO Signal (SIS) Input 24V DC 5A Safety Relay <br>Several contacts output <br> <br>Low start-up inrush current <br> <br>Parameter of DO Signal (SIS) Input 24V DC 5A Safety Relay <br> <br>CZSR8001-3A1B CZSR8001-2A2B <br>Supply voltage 24V DC 24V DC <br>Voltage tolerance 0.85~1.1 0.85~1.1 <br>Current consumption ≤90mA (24V DC) ≤90mA (24V DC) <br>Input current ≤50mA (24V DC) ≤50mA (24V DC) <br>Cable resistance ≤15Ω ≤15Ω <br>Input devices DO signals DO signals <br>Number of contacts 3NO+1NC 2NO+2NC <br>Contact material AgSnO2 + 0.2 µm Au AgSnO2 + 0.2 µm Au <br>External contact fuse protection 10A gL/gG NEOZED (NO); 10A gL/gG NEOZED (NO); <br> 6A gL/gG NEOZED (NC) 6A gL/gG NEOZED (NC) <br>Utilisation category In accordance with EN60947-5-1: In accordance with EN60947-5-1: <br> AC-15, 5A/230V; DC-13, 5A/24V AC-15, 5A/230V; DC-13, 5A/24V <br>Switch-on delay ≤300ms ≤300ms <br>Delay-on de-energisation ≤30ms ≤30ms <br>Recovery time ≤100ms ≤100ms <br>Supply short interruption 20ms 20ms <br>EMC EN60947, EN61000-6-2, EN61000-6-4 EN60947, EN61000-6-2, EN61000-6-4 <br>Vibration Vibration frequency: 10Hz~55Hz; Vibration frequency: 10Hz~55Hz; <br> Vibration amplitude: 0.35mm Vibration amplitude: 0.35mm <br>Ambient temperature -20℃~+60℃ -20℃~+60℃ <br>Storage temperature -40℃~+85℃ -40℃~+85℃ <br>Relative humidity 10%~90% 10%~90% <br>Overvoltage category Ⅲ Ⅲ <br>Pollution degree 2 2 <br>Rated insulation voltage 250V AC 250V AC <br>Rated impulse voltage 6000V (1.2/50us) 6000V (1.2/50us) <br>Dielectric strength 1500V AC, 1min 1500V AC, 1min <br>Clearance and creepage distance In accordance with EN 60947-1 In accordance with EN 60947-1 <br>Safety integrity level SIL3 SIL3 <br>Performance level PLe PLe <br>Category Cat.4 Cat.4 <br> <br>Now the price of intrinsic safety barrier is reasonable, if you have needs, please contact us. <br>#sis#signal <br>[a]https%3A%2F%2Fwww.chenzhuisolator.com%2Fproducts%2Fdo-signal-sis-input-24v-dc-5a-safety-relay.html%0A[/a]

What Is Isolation Barrier? <br>Intrinsic safety barriers and isolators use intrinsically safe explosion-proof and functional safety technologies and adopts various measures such as rapid cut-off, isolation, and energy limiting to ensure that the energy transmitted to the field equipment in the hazardous area is intrinsically safe, thereby preventing dangerous energy from entering the danger zone and causing an explosion. <br> <br>An isolation barrier, such as the digital input barrier, is a key interface unit in the intrinsically safe explosion-proof control system. The intrinsically safe barrier or the intrinsic safety barrier with quite affordable price made by CHENZHU, one of the top intrinsic safety barrier manufacturers in China, is made under a strict production process and tested by a series of quality assurance systems. <br> <br>IS Barrier Types <br>GS8500-EX Series Intrinsic Safety Barrier <br>GS8500-EX Analogue Intrinsic Safety Barrier <br>GS8500-EX Analogue Intrinsic Safety Barrier Loop Power <br>GS8500-EX Digital Intrinsic Safety Barrier <br>GS8500-EX Digital Intrinsic Safety Barrier Loop Power <br>GS8500-EX Temperature Converter Intrinsic Safety Barrier <br>GS8500-EX Voltage Input Intrinsic Safety Barrier <br>GS8500-EX Communication Input Intrinsic Safety Barrier <br>GS8500-EX Frequency Converter Intrinsic Safety Barrier <br> <br>GS5000-EX Series Intrinsic Safety Barrier <br>GS5000-EX Analogue Intrinsic Safety Barrier <br>GS5000-EX Analogue Intrinsic Safety Barrier Loop Power <br>GS5000-EX Digital Intrinsic Safety Barrier <br>GS5000-EX Digital Intrinsic Safety Barrier Loop Power <br>GS5000-EX Temperature Converter Intrinsic Safety Barrier <br> <br>GS8200-EX Series Intrinsic Safety Barrier <br>GS8200-EX Analogue To RS485 Intrinsic Safety Barrier <br> <br>LBGS8000-EX Series Surge Protective Intrinsic Safety Barrier <br> <br>GS4000-EX Series Backplane Intrinsic Safety Barrier <br> <br>What is Difference Between Intrinsic Isolated Barrier and Intrinsically Safe Isolator? <br>Isolator <br>The isolator is used to adjust, isolate and transform all kinds of field instrument signals into the normal signals or special signals specified by users which can be accepted by the computer, DCS, PLS, etc. It is also used to isolate control equipment and operational equipment from electronics, like a relay. <br> <br>Intrinsic isolated barrier <br>The isolated barriers for hazardous areas in our safety automation system for sale are associated equipments of explosion-proof instruments that will not affect the function of the measurement system in a normal situation. The isolation barrier is placed on one side of the security site, when the explosion-proof system fails, the intrinsic barrier can limit the energy (electric energy) which can enter the dangerous site to safe values to ensure the safety of the scene. <br> <br>Difference <br>1. Different feature. Barrier: High reliability and precision, strong EMC performance. Isolator: Gives electrical isolation among the input &amp; output circuits. <br> <br>2. Different function. Barrier: Protect electrical signals in potentially flammable or other hazardous areas. Isolator: Adjust, isolate and transform all kinds of field instrument signals into the normal signals or special signals specified by users. <br> <br>3. Main difference: Explosion proof or not. <br> <br>What is Safety Level of Intrinsically Safe Electrical Equipment? <br>IA <br>IA means that the explosive gas mixture cannot be ignited under normal operation, one counting failure, and two counting failures. IA-level intrinsically safe electrical equipment can be used in hazardous locations in Zone 0, Zone 1, and Zone 2. <br> <br>IB <br>IB means that explosive gas mixtures cannot be ignited under normal operation and a counting failure. IB&#039;s intrinsically safe electrical equipment that can be used in hazardous locations in Zone 1 and Zone 2. <br> <br>IC <br>IC means that explosive gas mixtures cannot be ignited under normal operation. IC-level intrinsically safe electrical equipment can be used in zone 2 hazardous locations. <br>#intrinsic#safety#barriers#and#isolators <br> <br>[a]https%3A%2F%2Fwww.chenzhuisolator.com%2Fproducts%2Fintrinsic-isolated-barrier%2F%0A%0A%0A%0A%0A%0A[/a]

Light Curtain Safety Relay <br>Light curtain Safety Relay supports PNP-type light beam devices. Safety relay modules provide a high level of fail-safe operation for critical processes and protection. These light curtains and multifunction controllers provide multiple functions such as release delay, muting, stepping, and protection for multiple curtains. <br> <br>Safety rated relays can choose single or dual channel operation, manual or automatic reset, with function of short circuit monitoring between channels. <br> <br>Features &amp; Advantages of Light Curtain Safety Relay <br>Support PNP type light beam device <br> <br>Support dual channel <br> <br>Support manual or automatic reset <br> <br>Parameter of Light Curtain Safety Relay <br>CZSR8001-3A1B-P CZSR8101-3A1B-N <br>Supply voltage 24V DC 24V DC <br>Voltage tolerance 0.85~1.1 0.85~1.1 <br>Current consumption ≤90mA (24V DC) ≤90mA (24V DC) <br>Input current ≤50mA (24V DC) ≤50mA (24V DC) <br>Cable resistance ≤15Ω ≤15Ω <br>Input devices PNP type light beam devices NPN type light beam devices <br>Number of contacts 3NO+1NC 3NO+1NC <br>Contact material AgSnO2 + 0.2 µm Au AgSnO2+ 0.2 µm Au <br>External contact fuse protection 10A gL/gG NEOZED (NO) ; 10A gL/gG NEOZED (NO); <br> 6A gL/gG NEOZED (NC) 6A gL/gG NEOZED (NC) <br>Mechanical endurance of contacts ≥107 ≥107 <br>Utilization category In accordance with EN60947-5-1: In accordance with EN60947-5-1: <br> AC-15, 5A/230V; DC-13, 5A/24V AC-15, 5A/230V; DC-13, 5A/24V <br>Switch-on delay ≤300ms ≤300ms <br>Delay-on de-energisation ≤30ms ≤30ms <br>Recovery time ≤100ms ≤100ms <br>Supply short interruption 20ms 20ms <br>EMC EN60947, EN61000-6-2, EN61000-6-4 EN60947, EN61000-6-2, EN61000-6-4 <br>Vibration Vibration frequency: 10Hz~55Hz; Vibration frequency: 10Hz~55Hz; <br> Vibration amplitude: 0.35mm Vibration amplitude: 0.35mm <br>Ambient temperature -20℃~+60℃ -20℃~+60℃ <br>Storage temperature -40℃~+85℃ -40℃~+85℃ <br>Relative humidity 10%~90% 10%~90% <br>Elevation ≤2000m ≤2000m <br>Overvoltage category Ⅲ Ⅲ <br>Pollution degree 2 2 <br>Rated insulation voltage 250V AC 250V AC <br>Rated impulse voltage 6000V (1.2/50us) 6000V (1.2/50us) <br>Dielectric strength 1500V AC, 1min 1500V AC, 1min <br>Clearance and creepage distance In accordance with EN 60947-1 In accordance with EN 60947-1 <br>Safety integrity level SIL3 SIL3 <br>Performance level PLe PLe <br>Category Cat.4 Cat.4 <br> <br>CHENZHU manufactures the most reliable interface product for safety automation system. We are here to help your device run more safely. Here you can not only get world-class products, but also outstanding service for automation and safety system. <br>#light#curtain#safety#relay <br> <br>[a]https%3A%2F%2Fwww.chenzhuisolator.com%2Fproducts%2Flight-curtain-safety-relay.html%0A[/a]

Photovoltaic DC SPD 1000 <br>Signal SPD for DC power, 1000VDC; In(8/20us): 20kA/phase, Imax: 40kA/phase; hot-pluggable; fault indication; <br> <br>Features &amp; Advantages of Photovoltaic 1000 DC Power SPD <br>Status indication: <br> <br>Green: OK <br> <br>Red: Failed <br> <br>DC power surge protector modules can be replaced online. <br> <br>Remote alarm output is optional, named with &quot;F&quot;. <br> <br>It is normally installed at the boundary of LPZ1 and LPZ2 or subsequent LPZs. <br> <br>Parameter of Photovoltaic 1000 DC Power SPD <br>T2-1000 <br>T2-1000F <br>Max. continuous operating voltage Ucpv 1000VDC <br>Short-circuit current rating Iscpv 1000A <br>Nominal discharge current In(8/20µs) 20kA <br>Max. discharge current Imax(8/20µs) 40kA <br>Voltage protection level Up 4kV <br>Recommended backup fuse 80A gG <br>Recommended grounding cable 6~35mm2 <br>Response time 25ns <br>Residual current IPE &lt;10μA <br>Remote alarm output 250VAC/0.5A;24VDC/0.5A <br>Housing protection grade(IEC60529) IP 20 <br>Housing material/inflammability rating(UL94) PA66/V0 <br>Testing standard IEC 61643-31 <br>#dc#spd#1000 <br> <br>[a]https%3A%2F%2Fwww.chenzhuisolator.com%2Fproducts%2Fphotovoltaic-1000-dc-power-spd.html%0A[/a]

Safety Mat Safety Relay <br>Automation safety relay modules provide a high level of fail-safe operation for critical processes and protection. This safety mat and multi-function controllers safety relay offer 2 or 4-wire safety mats/edges. Automatic reset and monitored manual reset are available. <br> <br>The programmable safety relays support 3 safety output contacts (N/O) and 1 auxiliary output contacts (N/C) or 2NO+1NC+1SO or 2NO(t)+1NC(t). <br> <br>Features &amp; Advantages of Safety Mat Relay <br>2-wire safety mats/edge <br> <br>4-wire safety mats/edge <br> <br>Automatic reset <br> <br>Monitored manual reset <br> <br>Parameter of Safety Mat Safety Relay <br> <br>CZSR8301-3A1B CZSR8301-3A1B(M) CZSR8302-3A1B CZSR8303-3A1B <br>Supply voltage 24V DC/AC 24V DC/AC 24V DC/AC 100V~230V AC <br>Voltage tolerance 0.85~1.1 0.85~1.1 0.85~1.1 - <br>Current consumption ≤90mA (24V DC) / ≤240mA (24V AC) ≤90mA (24V DC) / ≤240mA (24V AC) ≤90mA (24V DC) / ≤240mA (24V AC) ≤7 VA (220V AC) <br>Input current ≤50mA (24V DC) ≤50mA (24V DC) ≤10mA (24V DC) ≤10mA (220V AC) <br>Cable resistance ≤15Ω ≤15Ω ≤15Ω ≤15Ω <br>Input devices Safety mats (4-wire) Safety mats (4-wire) Safety mats (4-wire) Safety mats, safety edges (2 or 4-wire) <br>Number of contacts 3NO+1NC 3NO+1NC 3NO+1NC 1.0KΩ ~ 10KΩ <br>Contact material AgSnO2 + 0.2 µm Au AgSnO2 + 0.2 µm Au AgSnO2 + 0.2 µm Au AgSnO2 + 0.2 µm Au <br>External contact fuse protection 10A gL/gG NEOZED (NO); 10A gL/gG NEOZED (NO); 10A gL/gG NEOZED (NO); 10A gL/gG NEOZED (NO); <br> 6A gL/gG NEOZED (NC) 6A gL/gG NEOZED (NC) 6A gL/gG NEOZED (NC) 6A gL/gG NEOZED (NC) <br>Mechanical endurance of contacts ≥107 ≥107 ≥107 ≥107 <br>Utilisation category In accordance with EN60947-5-1: In accordance with EN60947-5-1: In accordance with EN60947-5-1: In accordance with EN60947-5-1: <br> AC-15, 5A/230V; DC-13, 5A/24V AC-15, 5A/230V; DC-13, 5A/24V AC-15, 5A/230V; DC-13, 5A/24V AC-15, 5A/230V; DC-13, 5A/24V <br>Switch-on delay ≤300ms ≤150ms ≤300ms ≤300ms <br>Delay-on de-energisation ≤30ms ≤30ms ≤30ms ≤30ms <br>Recovery time ≤300ms ≤300ms ≤100ms ≤500ms <br>Supply short interruption 20ms 20ms 20ms 20ms <br>EMC EN60947, EN61000-6-2, EN61000-6-4 EN60947, EN61000-6-2, EN61000-6-4 EN60947, EN61000-6-2, EN61000-6-4 EN60947, EN61000-6-2, EN61000-6-4 <br>Vibration Vibration frequency: 10Hz~55Hz; Vibration frequency: 10Hz~55Hz; Vibration frequency: 10Hz~55Hz; Vibration frequency: 10Hz~55Hz; <br> Vibration amplitude: 0.35mm Vibration amplitude: 0.35mm Vibration amplitude: 0.35mm Vibration amplitude: 0.35mm <br>Ambient temperature -20℃~+60℃ -20℃~+60℃ -20℃~+60℃ -20℃~+60℃ <br>Storage temperature -40℃~+85℃ -40℃~+85℃ -40℃~+85℃ -40℃~+85℃ <br>Relative humidity 10%~90% 10%~90% 10%~90% 10%~90% <br>Elevation ≤2000m ≤2000m ≤2000m ≤2000m <br>Overvoltage category Ⅲ Ⅲ Ⅲ Ⅲ <br>Pollution degree 2 2 2 2 <br>Rated insulation voltage 250V AC 250V AC 250V AC 250V AC <br>Rated impulse voltage 6000V (1.2/50us) 6000V (1.2/50us) 6000V (1.2/50us) 6000V (1.2/50us) <br>Dielectric strength 1500V AC, 1min 1500V AC, 1min 1500V AC, 1min 1500V AC, 1min <br>Clearance and creepage distance In accordance with EN 60947-1 In accordance with EN 60947-1 In accordance with EN 60947-1 In accordance with EN 60947-1 <br>Safety integrity level SIL3 SIL3 SIL3 SIL3 <br>Performance level PLe PLe PLe PLe <br>Category Cat.4 Cat.4 Cat.4 Cat.4 <br> <br>CZSR8302-2A1B1S CZSR8302-2AT1BT1S <br>Supply voltage 24V DC/AC 24V DC/AC <br>Voltage tolerance 0.85~1.1 0.85~1.1 <br>Current consumption ≤120mA (24V DC), ≤300mA (24V AC) ≤120mA (24V DC), ≤300mA (24V AC) <br>Input current ≤10mA (24V DC) ≤10mA (24V DC) <br>Cable resistance ≤15Ω ≤15Ω <br>Input devices Safety mats, safety edges (2 or 4-wire) Safety switches, Contact switches <br>Terminal resistance 1.0KΩ ~ 10KΩ 1.0KΩ ~ 10KΩ <br>Number of contacts 2NO+1NC+1SO 2NO(t)+1NC(t) <br>Contact material AgSnO2 + 0.2 µm Au AgSnO2 + 0.2 µm Au <br>External contact fuse protection 10A gL/gG NEOZED (NO); 10A gL/gG NEOZED (NO); <br> 6A gL/gG NEOZED (NC) 6A gL/gG NEOZED (NC) <br>Mechanical endurance of contacts ≥107 ≥107 <br>Utilisation category In accordance with EN60947-5-1: In accordance with EN60947-5-1: <br> AC-15, 5A/230V; DC-13, 5A/24V AC-15, 5A/230V; DC-13, 5A/24V <br>Semiconductor output data Number of semi-output：1SO Number of semi-output：1SO <br> Driving ability：20mA/24V DC Driving ability：20mA/24V DC <br>Switch-on delay ≤300ms ≤300ms <br>Delay-on de-energisation ≤30ms(instantaneous) ≤30ms (instantaneous) <br> 0s, 0.5s, 1s, 2s, 3s, 5s(Deleted factory set as 5s) <br>Recovery time ≤100ms ≤100ms <br>Supply short interruption 20ms 20ms <br>EMC EN60947, EN61000-6-2, EN61000-6-4 EN60947, EN61000-6-2, EN61000-6-4 <br>Vibration Vibration frequency: 10Hz～55Hz; Vibration frequency: 10Hz～55Hz; <br> Vibration amplitude: 0.35mm Vibration amplitude: 0.35mm <br>Ambient temperature -20℃~+60℃ -20℃~+60℃ <br>Storage temperature -40℃~+85℃ -40℃~+85℃ <br>Relative humidity 10%~90% 10%~90% <br>Elevation ≤2000m ≤2000m <br>Overvoltage category Ⅲ Ⅲ <br>Pollution degree 2 2 <br>Rated insulation voltage 250V AC 250V AC <br>Rated impulse voltage 6000V (1.2/50us) 6000V (1.2/50us) <br>Dielectric strength 1500V AC, 1min 1500V AC, 1min <br>Clearance and creepage distance In accordance with EN 60947-1 In accordance with EN 60947-1 <br>Safety integrity level SIL3 SIL3 <br>Performance level PLe PLe <br>Category Cat.4 Cat.4 <br>#automation#direct#safety#relay <br> <br>[a]https%3A%2F%2Fwww.chenzhuisolator.com%2Fproducts%2Fsafety-relay%2F%0A%0A[/a]

Safety Relay <br>Automation direct safety monitering relays are mainly applied to the safety control circuit, connecting the safety sensing elements and mechanical equipment motion controller. The working principle of safety relay interlock system: when there is a fault in the safety circuit, the intrinsic safe relay automatically detects the fault and stops the machine movement, to protect equipment and personnel safety. <br> <br>Chenzhu solid state safety rated relay is the first product to get PLe/Cat.4, SIL3 certified in China mainland. Automation and safety is the main character of the programmable safety relay module that you can be assured. <br> <br>Various safety relay products are available for you to select. We have safety relay for E-stop buttons, emergency stop buttons, two-hand control buttons. We also provide light curtain safety relay, sil 2 rated relay and sil 3 rated relays to better meet the needs of our customers. For more information, please feel free to contact us. <br> <br>Safety Relay Types <br>CZSR Classic Series Safety Relay <br>E-Stop Button, Safety Gate Safety Relay <br>Light Curtain Safety Relay <br>Two-hand Push Buttons Safety Relay <br>Safety Mat Safety Relay <br>Extension Module Safetu Relay <br> <br>CZSR Process Series Safety Relay <br>DO Signal (SIS) 24V DC 2A Safety Relay <br>DO Signal (SIS) 24V DC 3A Safety Relay <br>DO Signal (SIS) Input 24V DC 5A Safety Relay <br> <br>CZSR Smart Series Safety Relay <br> <br>FAQ of Safety Relay <br>Q <br>What is safety relay? <br>A <br>Safety relay offer an extra level of protection usually through a redundant wiring system. <br> <br>These relays are used to enable an monitor the signals between other safety devices such as safety switched sensors, light curtains, intrinsic safety barriers and isolators. In many cases, the safety relay can be paired with a safety PLC configurable safety relay or safety controller. <br> <br>Q <br>What is the difference between safety relay and normal relay? <br>A <br>Compared to a normal relay, a safety control relay have mandatory steering contact arrangement assures protection when contact fusion happens. A safety relay is a module composed of multiple relays and logic circuits. It is a circuit composition unit. In order to achieve the correct and low malfunction feature and to minimize errors and failure values, and complete each other&#039;s faults in a fault state to enhance safety factors. <br> <br>Q <br>How does an intrinsically safe barrier work? <br>A <br>Safety relays are generally composed of two or more relays and electronic circuits, so as to complement each other&#039;s abnormal defects. Even if any component fails, it can diagnose the failure and enter a safe state. And it will not affect the shutdown instructions issued to the machine, ensuring the safety of production. From the structural point of view, the safety relay generally adopts a dual-channel structure, and the channels can diagnose each other, and use a forced-oriented relay to realize the diagnosis of the output contact fusion fault. <br> <br>Q <br>How do safety relays improve safety? <br>A <br>Like electrical panel box surge protector, safety relays are devices that implement safety functions. When a danger occurs, the safety relay will play a role in reducing the danger to an acceptable level. When an error occurs, the safety relay will initiate a safe and reliable response. Each safety relay monitors a specific function. <br> <br>Q <br>What are the main applications of safety relays? <br>A <br>Suitable for the application of electromagnetic door lock switch to ensure the safety of the work area. <br> <br>It is suitable for the key to cooperate with the safety gate switch to detect the opening and closing of the door. <br> <br>Applicable to safety gates, detecting the position of the door, opening or closing applications. <br> <br>Suitable for light beam devices to prevent workers from entering the dangerous work area. <br> <br>Applicable safety mat switch to confirm that workers can safely enter the hazardous work area. <br> <br>Applicable E-stop buttons, in case of emergency, stop the machine operation. <br> <br>Q <br>What&#039;s the line monitoring function of Safety Relay? <br>A <br>Line monitoring is the basic function for safety relay which is used into SIS, which all CHENZHU automation direct safety relay offerred and built to PCB. Just input the DO signal and safety relay will check the test pulse automatically. When pulse error happens, safety relay will cut off the output so that to ensure SIF to work. <br> <br>CHENZHU manufactures the most reliable interface product for safety automation system. We are here to help your device run more safely. Here you can not only get world-class products, but also outstanding service for safety and automation system. <br>#mat#relay <br> <br>[a]https%3A%2F%2Fwww.chenzhuisolator.com%2Fproducts%2Fsafety-mat-safety-relay.html%0A[/a]