Features:

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 convenient to connect with blue KF301 terminal access control cable.

Specification:

VCC: Power interface ,5V
GND: Ground
IN: Control interface .Drive Current at least 4mA
COM: Control circuit ground ,Connect to GND
Size: approx. 41 x 16 x 16mm/ 1.61 x 0.62 x 0.62''
Weight: approx. 12g

Package Contains
1Nos 5V 1 Channel Relay Module for Arduino