Size:5V Specification: Supply Voltage: 5V Quiescent Current: 4mA Working Current: 65mA Trigger Voltage: 0-2V Trigger Current: 2mA VCC: positive power supply GND: negative power supply IN: can be high or low level control relay NO: normally open relay interface COM: Common Interface Relays NC: normally closed relay interface Feature: Comply with international safety standards, with isolation groove in control area and load area. With power and relay action indication, bright when connect and go off when disconnects. When there is a signal in signal input, public side and common side will breakover. It can be not only used as a microcontroller development board module, but also as a home appliance control. It can not only control the DC or AC signal, but the 220V AC load. With a permanent open and close vents contact. It is more convenient to connect control line with blue KF301 terminal. Note: 1. High level flip-flops shows that there are trigger mode of the voltage between the signal input terminal and the ground; That is to say it is a way of short circuit trigger between signal input and VCC positive pole. 2. Low level flip-flops shows that there are voltage for OV trigger mode between the signal input terminal and the ground. In a word, it is a way of short circuit trigger between signal input and GND negative pole. Package Included: 2x 1 Channel 5V Relay Module Low Level Trigger
M**L
Easy to use - leds are very helpful when prototyping
Great product - 5 stars. I have ordered other relays which were failing. These have 2 leds which tell you if the relay is powered on and if trigger pin is in the high state. I'm ordering more - I'm using them with Arduino (5V logic) and ESP32/ESP8266 (3.3V logic). Both work great. Please keep in mind they need 5v power source (I connect VCC to USB pin when using ESP32/ESP8266). Trigger pin (IN) accepts 3.3V so you can turn them on/off using any GPIO.
A**R
Any potential difference between 'Vcc' and 'IN' triggers relay
Any potential difference between Vcc and IN causes trigger. Therefore you cannot send ground to IN for relay to be "off". If you want to be frustrated, buy these.
L**S
Good relays
have good switch time and the leds are helpfull with testing
Trustpilot
1 month ago
3 weeks ago