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3.3V 1 Channel Relay Module High Low Level Adjustable Trigger Board for Arduino

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$3.45 $2.76
Quantity3+5+
Price$2.75$2.55
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Description:

NO. Parameter Value
1 Name 3.3V single channel relay
2 Size 50*26*17mm
3 Voltage 3-3.3V
4 Current <200mA (operating); <5mA (trigger)
5 Interface Input: VCC, GND, IN;
Load Port: Normal Close, Common, Normal Open
6 Operating Temperature -25~85 Celsius


Application:
It can control high current load via low current, and replace mechanical switch.

Principle:
Connect the power; when push the switch to L, IN port will input low level, and relay will operate, S lamp will be on.
If COM and NO are connected; when input high level, the relay will release, and S lamp will be off.
If COM and NO are disconnected, it becomes connection between COM and NC. If push the switch to H, and not use the relay, NC and COM are connected.

Features:
1.Optocoupler Isolation: it will not be affected when low current control high current load.
2.Load wire is fenestrate processed, if it is tin plated, it can bear high current (please pay attention to the insulation)
3.Load Capacity: 7A, 240V AC; 10A 120V AC; 10A 28V DC. Please do not go beyond the voltage or current, or it will burn the relay contact

Wiring Diagram:
1. VCC connects DC 3.3V positive
2. GND connects DC 3.3V negative
3. IN connects main control equipment input port, such as MCU, sensor output port (0 and 1, you can adjust via the switch on your own)
4. Please note that the power cannot be reversely connected, or it will burn the module.

Wiring Diagram 1:

1.The circuit: load, controller, relay module use the same power supply
2.When push the switch on relay board to L, the sensor output low level, and the relay and load will operate;
  otherwise, the relay will be released and the load will stop.
3.When push the switch on relay board to H, the sensor output high level, and the
relay and load will stop operating; otherwise, the relay and load will operate
4.The power voltage depends on the power supply voltage of the relay; for example, if the relay is 5V, then  use DC 5V.
  Please make sure that the power current is higher than load current.

Wiring Diagram 2:


1. The circuit: the load supply and relay supply are independent
2. When push the switch on relay board to L, the sensor output low level, and the relay and load will operate;
   otherwise, the relay will be released and the load will stop.
3. When push the switch on relay board to H, the sensor output high level, and the relay and load will stop operating;
   otherwise, the relay and load will operate.
4. The power voltage depends on the power supply voltage of the relay; for example, if the relay is 5V, then use DC 5V.
   Please make sure that the power current is higher than load current
5. Load supply depends on the voltage and current needed by the load, and the relay functions like a switch.

Quantity3+5+
Price$2.75$2.55
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3.3V 1 Channel Relay Module High Low Level Adjustable Trigger Board for Arduino
$2.76
$3.45