4-Channel 12V Relay Module

Specification:

• Ideal for single chip microcomputer, household appliance control, etc
• Control DC / AC signal, can control 220V AC load
• One normally closed contact and one normally open contact
• Triode drive, increasing relay coil
• High impedance controller pin
• Pull-down circuit for avoidance of malfunction
• Power supply indicator lamp
• Control indicator lamp
• Channel: 4 channel
• TTL Control Signal: 5V-12V
• Relay Voltage: 12V
• Hole Diameter: Approx. 3mm
• Size (L x W x H): Approx. 71 mm x 45mm x20