Function: this switch module can effectively protect your battery when power failure automatically.Automatic design: you will no longer need to care it after installation.Premium material: anti-rust,wear-resistant,sturdy and solid, and can provide long-term service.Light in weight: Easy to carry and store,convenient for daily use and replacement.Easy to install: simple and practical to install, one-handed operation.Product name: Power failure automatic switching moduleItem model number: X804Applicable voltage: DC 12V-48VProduct load: 10AProduct size: 50 x 30 x 18mmMaterial: PCcolor: bluePackage Contents:1 x ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.