Features 1、Trigger Source: 1 channel relay module, supporting high level, low level and switching value control trigger, which is efficient and reliable. 2、Circuit Protection: The relay module has built in diode to provide accidental reverse connection protection for the circuit, safe and stable. 3、Good Performance: With optocoupler isolation, anti interference ability, industrial grade circuit board, no loss of parameters after power failure. 4、Simple Control: Programmable delay mode controls relay timing, the relay module can control DC 30V5A or AC 220V5A equipments. 5、Wide Applications: Widely used in smart household, industrial control, automatic irrigation, indoor ventilation and protection equipment, etc. Specification Item Type: 1 Channel Relay Module Trigger Source: High level trigger (3.0V24V), low level trigger (0.0V 0.2V), switching value control (passive switch) Quiescent Current: 20mA Working Current: 50mA Service Life: More than 100000 times Working Temperature: -40-85℃ Features: With optocoupler isolation, enhanced anti interference ability, industrial grade circuit board, parameters are not lost after power failure. Package List 1 x Relay Module