Description Using A Jumper, Either High- Or Low-Level Control Can Be Selected. The Module Uses Genuine Quality Relays, With Normally Open Interfaces. Maximum Load: Ac 250V10A, Dc 30V10A. Using Smd Optocoupler, Strong Driving Ability, Stable Performance Trigger Current: 5 Ma. Fault-Tolerant Design, Even If The Control Line Is Interrupted, The Relay Will Not Move. The Interface Design In Human Nature: All Interfaces Are Available Via A Direct Connection With Terminal Lines, Very Comfortable. Amazon Prices 24.46 24.46 13.04 11.42 29.36 17.93 11.43 30.17 17.93 12.24 Consult 30.17 3 Consult Consult Consult Share Product Image Categories DIY & Tools > DIY & Tools > Building Supplies > Heating & Cooling > Boilers & Accessories > Furnace Relays Brand: HiLetgo