Features Optocoupler isolation, parameter power off will be saved automatically. Adopted of high quality electronic components, and accuracy process, make sure for the durability. The time delay can control DC30V, within 5A or AC 220V, within 5A. This time delay has reverse connection protection. Professional structure, it has long service life. Specification: Item Type: Relay Module Operating Voltage: DC 6-30V power supply, and support micro USB 5.0V power supply Trigger Signal Source: DC 6.0V-24V high-level trigger; signal ground and system ground do not share, improve the system's anti-interference ability (can also short-circuit common ground) Output Capability: It can control devices within DC 30V 5A or AC 220V 5A Quiescent Current: 20mA Working Current: 50mA Service life: more than 100,000 times Working Temperature: -40℃- 85℃ Size: Approx. 6.4 x 3.8 x 1.7cm / 2.5 x 1.5 x 0.7in Package List: 1 x Relay Module Note: The relay output is a passive contact, with no live output, controlling the function of a line. Package List 1 x Relay Module