Features 1、Adopted of high quality electronic components, and accuracy process, make sure for the durability. 2、This time delay has reverse connection protection. 3、Optocoupler isolation, parameter power off will be saved automatically. 4、The time delay can control DC30V, within 5A or AC , within 5A. 5、Professional structure, it has long service life. Specification Item Type: Relay Module 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) 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