1 channel relay module.

One normally closed contact and one normally open contact.

High impedance controller pin.

Default High-level trigger.

Pull-down circuit for the avoidance of malfunction.

Power supply indicator lamp.

Can be controlled various appliances & other Equipment With Large current.

Standard TTL Level logic controlled.

The module is compliant with international safety standards.

With 4 fixed screw holes, hole diameter 3.1mm, convenient installation, and fixation.