5v 8 channel relay module

This neat relay module features 8 x 12V relays rated at 10A/250V each. It's designed to switch up to 8 high current (10A) or high voltage (250V) loads from a microcontroller!

Each relay can be individually switched on/off by an opto-isolated digital input, which that can be connected directly to a microcontroller output pin. It only requires a voltage of approx 1.0V to switch the inputs on but can handle input voltages up to 5V. This makes it ideal for 3.3V, 5V devices

Technical Specification

• Dimensions:
• Height 18.5 mm × Length 73 mm × Width 50 mm
• Interface Description:
  DC+: Connect to the positive power supply 5V
• DC-: Connect to the negative power supply
  IN1–IN4: According to each channel’s setting, each can be controlled by either high or low level to activate the corresponding relay
• Relay Output Terminals:
  There are 12 wiring terminals. All terminals can be directly connected for easy use.
• NO1–NO4 (Normally Open):
  Before activation: open circuit
• After activation: shorted to COM
  COM1–COM4:
  Common terminals of the relays
• NC1–NC4 (Normally Closed):
  Before activation: shorted to COM
  After activation: open circuit
• High/Low Level Trigger Selection:
  S1–S8: Correspond to channels 1–8 relay high/low level trigger selection
  When COM is shorted to LOW, the relay is triggered by a low level
  When COM is shorted to HIGH, the relay is triggered by a high level.

Quiescent current:5mA

MAX current: 190mA

Trigger Current : 3–5mA

Low Trigger Voltage : 0–1.5V 

High Trigger Voltage : 4–5V