Reviews Digital Count Relay

Macurco TX-12-HS White Hydrogen Sulfide H2S (Line Voltage) Fixed Gas Detector Controller Transducer with White Housing

  • Output: fan relay, alarm relay and 4-20ma current loop.
  • Controls: buzzer, Digital display, latching relay, relay Delay, relay minimum runtime.
  • Mounts on a standard 4” x 4” electrical box.
  • 5 a spdt fan relay controls starters of exhaust fans.
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AEDIKO 4pcs DC 5V Relay Module 2 Channel Relay Board with Optocoupler Support High or Low Level Trigger

  • Normally Open Interfaces Maximum Load : AC 250V/10A, DC 30V/10A.
  • 2 Channel Relay Module 5V Comes with High-Current Relay,Trigger Current : 5mA.
  • 5V Relay Module is 2 Channel Isolated, Each Relay Can Individually Switch On/Off by An Opto-Isolated Digital Input.
  • Relay Module Designed With Fault-Tolerant , Even If The Control Line Breaks, The Relay Will Not Move.
  • With Optical Coupling Isolation,Triggering More Reliable and Stable.
  • 2 Channel Module Equipped With Screwed Terminal Plate and Fixed Bolt Holes,Standard Interface Can Connect With Microcontrollers and be Controlled by a Wide Range of Microcontrollers.
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AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board

  • 【30VDC 250VAC Load】 Equiped with high-current relay, AC250V 10A.
  • DC30V 10A, each relay has normally open and normally closed contact. Can be selected by jumper relay and TTL or ground..
  • 【High Level Trigger】The relay module is triggered by high level signal, which can be input from microcontroller IO..
  • 【 3V/3.3V power relay module】- This Relay Board provides a single relay that can be controlled by any 3V/3.3V digital input from your microcontroller IO..
  • 【Wide Application】- These 3v relay board works well with ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4/3.3V /NodeMCU/ ESP8266 module etc..
  • 【Long Life】 - Fast response time less than 20ms and long lifetime up to 100,000 times snap action with diode freewheel protection..
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12 Volt Timer Relay, DROK 0.1s to 999min 50mA 4-Mode On-Off Automotive Digital Delay Relay, Electric Delay Timer Switch, Cycle Time Delay Module with LED Display

  • 4 MODE TIME DELAY RELAY: DROK 12V relay is provided with 4 different settings and supports various triggering signal source, like positive side of power supply triggering, Button, PNP sensor, PLC signal, which is available for most of applications..
  • WIDE ADJUSTABLE TIMING RANGE: This off delay relay supports widest timing range, 0.1 seconds to 999 minutes adjustable, which can fulfilled your various need..
  • STRONG ANTI-INTERFERENCE ABILITY: The output of digital timer relay adopts optocoupler isolation, which enhances the capacity of resisting disturbance power consumption..
  • SUPER SIMPLE OPERATION: Our relay board is operated by buttons and the delay module is equipped with LED digital display which is convenient for you to check the set value..
  • AUTOMATIC SAVING FUNCTION: After you finish the setting, you can cut off the power and then the parameters will be saved automatically, handy and convenient..
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Macurco TX-6-AM Ammonia NH3 Low Voltage Fixed Gas Detector Controller Transducer

  • Fan relay actuation: Selectable from 15 to 75 ppm Nh3.
  • Output: fan relay, alarm relay and 4-20ma current loop.
  • Controls: Digital display (0-100 ppm), buzzer, fan Delay, fan minimum runtime.
  • Mounts on a standard 4” x 4” electrical box.
  • 5 a spdt fan relay controls starters of exhaust fans.
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Edwards Signaling 7005-G5 Door Annunciator

  • ...equipment, optional relay working mode. Has 6 alarm inputs. When the input is shorted to GND, an alarm will be triggered and an alarm message will be sent..
  • ☆☆One relay output with call mode and the other relay output with SMS control can be easily programmed with mobile phone or PC software. SMS can be used for digital programming quickly and conveniently through SMS or on‑board quick teach button..
  • ☆☆Support free control mode or security authorization number control mode, support custom commands, easy to understand. Optional password to keep the system in safe operation mode, support remote password operation and password change..
  • ☆☆Applications include remote control of heating of holiday houses, lighting, engine preheaters, aircraft engine heaters, irrigation systems, well pumps, pumping stations, cabin heaters, resetting of remote servers, arming and disarming security systems, and door Access control and garage door..
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5v Relay Board Relay Module 1 Channel Opto-Isolated High or Low Level Trigger

  • 【1 Channel Relay Module】- This Relay Board provides a single relay that can be controlled by any 5V digital output from your microcontroller..
  • 【Main Specification】- Peak Load of NO Connector: AC125~250V/10A, DC28~30V/10A.
  • 【Adopted SMD Optocoupler Isolation】- The isolation circuit prevent damages to I / O port by relay switch current..
  • 【Wide Application】- These 5v relay board works well with ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc..
  • 【Humanization Design On Interfaces】- All interfaces can be directly wired out through the terminals..
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Youngneer 5v Relay Board Raspberry Arduino Relay Module 1 Channel Opto-Isolated High or Low Level Trigger

  • 【1 Channel Relay Module】- This Relay Board provides a single relay that can be controlled by any 5V digital output from your microcontroller..
  • 【Main Specification】- Peak Load of NO Connector: AC125~250V/10A, DC28~30V/10A.
  • 【Adopted SMD Optocoupler Isolation】- The isolation circuit prevent damages to I / O port by relay switch current..
  • 【Wide Application】- These 5v relay board works well with Arduino/ ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc..
  • 【Humanization Design On Interfaces】- All interfaces can be directly wired out through the terminals..
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3v Relay Board Raspberry Pi Arduino Relay Module 1 Channel Opto-Isolate High Level Trigger for IOT ESP8266 Microcontrollers Development Board

  • 【1 Channel Relay Module】- This Relay Board provides a single relay that can be controlled by any 3V/3.3V digital input from your microcontroller IO..
  • 【Main Specification】- The 3v Relay 1 Channel power switch module compatible with 10A 250VAC and 10A 30VDC load.4pcs * 2.5 mm Fixed Bolt Hole..
  • 【Adopted Optocoupler Isolation】- 3V/3.3V power relay module supports photocoupler isolation control and dual power supply input ensure high anti-interference ability. Fast response time less than 20ms and long life time up to 100,000 times snap action with diode freewheel protection..
  • 【Jumper Caps】You can select whether the relay and the signal use the same power supply or not by removing the jumper caps on the pins. And It is better to share the same power supply, because that is more convenient for using..
  • 【Wide Application】- These 3v relay board works well with Arduino/ ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4/3.3V /NodeMCU/IOT/ ESP8266 module etc..
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Weewooday 15 Pieces 5V Relay Module 1- Channel Relay Control Boards with Optocoupler Isolation High and Low Level Trigger Expansion Board

  • Relay module: this relay board supports high and low level trigger and can be controlled by any 5V digital output of the microcontroller.
  • Parameter details: maximum load of normally open interface: AC 250v/ 10A, DC 30v/ 10A, trigger current is 5mA.
  • The 5v relay control board adopts SMD optocoupler isolation, which has strong driving ability and stable performance.
  • Practical design: with fault-tolerant design, the relay module will not operate even if the control line is disconnected.
  • All interfaces can be provided through directly connected terminal s since the humanized interface design, it is very convenient to use.
  • High compatibility: the relay module can be directly controlled by the 5V logic signal provided by the microcontroller, suitable for 8051, Raspberry Pi, PIC, DSP, ARM, AVR, MSP430, TTL logic, etc..
  • Wide application: this 5V relay board can be applied with Raspberry/ CNC machine/ ARM/ PIC/ AVR/ MCU/ PS4 and more.
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Inkbird PID Temperature Controller Kit High Voltage 100ACV to 240ACV Comes with SSR 40DA Solid State Relay K Type Thermocouple and White Heat Sink

  • 【Alarm Output】With one alarm relay output: AC250V 3A (Resistive load) ON/NC, you may connect it with a buzzer..
  • 【Supports 3 Wires Sensors】3 wires sensor or 2 wires sensor, like K type thermocouple and Cu500, are supported by this PID temperature controller.
  • 【SSR Output】With one relay output for external SSR, SSR or relay is a must for this temperature controller. A 40DA SSR is included.
  • 【Digital Display ℃/℉】It’s a digital PID controller but also supports Centigrade and Fahrenheit reading.
  • 【2 Temp Displaying Windows】The real-time temperature and the setpoint are shown at the same time.
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KNACRO -20~60℃ 10A XY-TR01 Digital Temperature Humidity Control Module Controller High Precision

  • Temperature and humidity control module high precision digital display word double output automatic constant temperature and humidity control panel.
  • Product adopts industrial-grade chip, high-precision SHT20 temperature and humidity sensor..
  • Parameter remote read/set: Through the UART, set the starting temperature/humidity, stop temperature/humidity, temperature/humidity correction parameters.
  • temperature/Humidity Real-time reporting: If the temperature/humidity reporting function is turned on, the product will detect the temperature/humidity and relay status by the 1s interval, and pass the UART to the terminal to facilitate data collection.
  • Relay enabling (by default): If the relay is disable, the relay remains disconnected.
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2-Pin Electric Flasher Relay VOFONO 12V Heavy Duty 2 Pin Compatible Automobile Motorcycle Bike Scooter Fix Turn Signal Bulbs Fast Hyper Flash，Two Prong Round

  • This is a heavy duty 2 pin 12V electric signal flasher (blinker) relay that is a plug and play design. No extra wiring or modifications are required....
  • Our led flasher relay retain the reliability of an flasher along with staying extra cool, consuming very little power and extra long lasting life..
  • Our 2 pin 12 volt round led flasher relay work for Most Automotive/Motorcycle/Bike to fix the rapid flashing turn signal or prevent weak or no....
  • Our no load digital flasher relay Works with regular bulbs.
  • Our two prong led flasher relay Product Dimension:2.3 x 1.4 x 1.3 inches . MAX 20 AMPS & Voltage: 12 volts.
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