3V Single-way Relay Module 1-way High-level Trigger Current Conversion Board for arduino Microbit

This is a commonly used single-channel relay module, which mainly uses HK4100F-DC 3V-SHC relay components. It is usually used in automatic control circuits, and it is actually an 'automatic switch' that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit.

The relay has 3 green binding posts for external circuits, which are NO COM and NC terminals (screen printing on the back). When the relay is not connected to the control signal, the COM terminal and the NC terminal are connected, and the COM terminal and the NO terminal are disconnected.

When controlling, we connect GND to the MCU GND, VCC to the MCU 3.3V, and S to the MCU digital port. When the S signal terminal is set to a high level, the relay is turned on, the COM terminal and the NC terminal of the relay are disconnected, and the COM terminal and the NO terminal are connected; when the S signal terminal is set to a low level, the relay is closed, the relay COM terminal and the NC terminal are connected, and the COM terminal is connected. terminal and NO terminal are disconnected.

At the same time, the module comes with two positioning holes with a diameter of 3mm, which is convenient for you to fix the module to other devices.

Working voltage: DC 3.3V

Rated current: 50--120mA

Coil impedance: 25--60╬®

Mechanical life: 100,000 times under no load

Electrical life: 3A/250VAC Cos¤å=1, 100,000 times when rated voltage is applied; 3A/30VDC, 100,000 times when rated voltage is applied.

Maximum operating frequency: Electrical 30 times per minute; Mechanical 300 times per minute

Insulation resistance: when applying 500VDC insulation resistance is greater than or equal to 100M╬®

Contact capacity: 3A/250VAC 3A/30VDC

Operating temperature: -15 Ôäâ to +60 Ôäâ

Interface: 3pin pitch is 2.54mm pin header interface

Signal: high-level relay pull-in

1 x Relay module (the other items are not includes)