Reviews Delay Relay Board

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..

【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..

The Composition of This Product: Three-phase voltage protector, chronograph and counter are integrated in one relay..
Function: This voltage protection relay has overvoltage, undervoltage, phase loss, phase sequence and unbalanced three-phase voltage protection..
Practicality: This 3-phase voltage relay does not require an external power supply. Has practical functions: power delay, output test, etc.
2 rest modules are optional, manual and automatic..
The LCD can display data for easy reading..

【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..

5V 8-Channel Relay interface board, each one needs 70mA Driver Current.
Equiped with high-current relay, AC250V 10A.
Each relay has normally open and normally closed contact. Can be selected by jumper relay and TTL or ground..
With power indicator,8-way road has a status indicator. With a relay coil to absorb the diode protection..
Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).
The 8 channels are optically isolated, safe, reliable, anti-interference. Widely used for all MCU control, industrial sector, PLC control, smart home control。For a complete data sheet for this relay board, please download it from: http://dwz.win/UhW.

Access control keypad is sturdy rugged keypad.
with zinc alloy electroplated technology.
The circuit board is completely encapsulated in epoxy to be weatherproof.
keyboard is waterproof so you can use it outdoor or indoor.
the keys light will stay on in dark places or at night.
Red light stands for enter into programming mode.
Yellow light for in the programming mode.
Green light for operation successful mode.
Wiegand access control keypad can be as a standalone reader or keypad.
so that you could connect this to a powered device without the use of some computing intermediate.
you can set the public password or private password and the password can be changed which is more secure and personalized.
You can use the access control keypad to add and delete 2000 user information.

【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..

Basic Function:When the piercing current exceeds the set value, the output switch will act Automatically reset when the piercing current is less than the set value..
Set threshold: set the threshold when the perforation current exceeds the threshold, the relay will work, and when the perforation current is lower than the threshold, the relay will reset.
Indicator light: the indicator light is off when there is no current, the green light is on when the current is lower than the threshold, and the red light is on when the current is higher than the threshold.
Delay adjustment: power-off delay can be set from 0 to 99 seconds, clockwise to increase and counter-clockwise to decrease.
Detection range: 0-50A, [email protected] AC/DC contact capacity.

Tone Signal Decoder Relay --- Operating Current: Standby 11-13 MA, 1 relay.
Signal Decoder --- Working voltage DC 12V, with reverse polarity protection.
DTMF Decoder --- The default control command is 1/2/3/4,Product model: AD22B04.
Audio Signal Decoding Relay --- Eight modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay.
Decode Relay --- 100% SATISFACTION GUARANTEE : We guarantee that the products you get are consistent with our description. If there are any product problems, our customer service will give you the most professional service.