Features:Battery capacity and voltage meter. LCD screen with green backlit. Long service life button with comfortable hand feeling. Equipped with a PVC film, the surface is waterproof. Built with buckle, free of screw installation. Universal battery capacity meter, need to set up by yourself. Specifications:Material: HTN / PCBWeight: 18gSize: Approx. 6 * 3.2 * 1.5cm / 2.4 * 1.3 * 0.6inVoltage: 6-70 (V)Applicable scope: Battery pack, UPS, EPS, power supply, emergency power supply Storage temperature: -20 ~ 60 Working current: 5mAFunctions:1. Manually switch battery percentage / voltage / power off2. Automatic recycling display battery capacity / voltage per 2 seconds (Settable)3. 10s delay auto off (Settable)4. Double discharge curve selection (Settable)Package List:1 x Battery Capacity Voltage Meter1 x Connecting Cable.