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Introduction
1, the module is comply with international safety standards, control area and load region isolation groove
2, double FR-4 circuit board design, the production of high-end chip technology
3, genuine relay control
4, power and relay instructions, attracting bright, disconnect not bright
5, the signal input end has high level signal, the public end and often start will conduct
6, the relay directly control various devices and load
7, there are 1 normally open and 1 normally closed contacts
8, blue KF301 terminal is connected to the line of control more convenient
9, weight: 15g
10, size: 43x17x18.5mm

Module interface
Input part
VCC: is connected with power supply anode (press the relay voltage power supply)
GND: is connected with power supply negative pole
IN: relay module signal trigger end (high level trigger effective)

Output part
1 Often end (NO): relay often start, relay has no attraction, and the common end disconnected, connected with the public end pull
2 Public end (COM): public terminal relay
3 Normally closed end (NC): normally closed terminal relay, relay no attraction, connected with the public side, and the common end disconnected pull