4 Channels 5V High Level Relay Shield With LED

4-way 5V high-level relay shield with LED
product manual:
1, the module conforms to the international safety standards, the control area and the load area has the isolation groove;
2, using double-sided FR-4 circuit board design, high-end chip production process;
3, the use of loose music authentic relay control;
4, with power and relay action instructions, pull bright, off does not shine;
5, the signal input has a high signal, normally open side normally open;
6, the relay can directly control a variety of devices and loads;
7, there are four normally open and four normally closed contacts;
8, blue KF301 terminal connected to the control line more convenient.
9, the module size: 72x41x18.5mm; net weight: 56g
10, the finished product passed 100% functional test and stability test
Module Interface:
First, enter the part:
VCC: Positive power supply (by the relay voltage)
GND: Connect the negative power supply
IN1: 1 relay module signal trigger side
IN2: 2-way relay module signal trigger side
IN3: 3-way relay module signal trigger side
IN4: 4-way relay module signal trigger side
Output section (relay output):
1, normally open 1-4: normally open relay interface, floating before the relay inhalation, short circuit with the public
2, commonly used 1-4: relay commonly used interface
3, normally closed terminal 1-4: normally closed relay interface, the relay before using public short circuit,
Trigger requirements:
If the signal is connected to another module, it must be grounded (negative power supply) between the two modules. If you share the power, you can connect a single signal line.
High and low meaning:
High-level trigger means that there is a positive voltage between the signal trigger side (IN) and the negative supply. The power supply is usually connected to the trigger side of the trigger. When the trigger side voltage or the trigger reaches the trigger voltage, the relay pulls.
Low-level trigger means the voltage between the signal trigger terminal and the power negative terminal is 0V, or the voltage of the trigger terminal is lower than the voltage of the positive power supply. When the voltage is low enough to trigger, the relay is pulled in, the negative terminal of the power supply is connected to the trigger side of the trigger, and the relay is pulled.