Features: 1. Patented product, using neutral production packaging, the surface is dustproof and waterproof, with full protection of the back cover 2. One-piece display port, puncture protection, soft type button feels good 3. Color LCD display, transparent bulb, soft night display 4. Custom battery type, suitable for lead acid, Lithium battery, lifepo4, nickel hydrogen battery 5. Display the percentage remaining power, voltage, temperature value (Celsius, Fahrenheit can be set) 6.10-100V wide voltage input, reverse connection protection 7. Custom delay of 10-120 seconds of sleep 8. Sleep Shutdown Low Power Consumption 9. Simple installation, independent screw without buckle 10. low voltage alarm 11. Over temperature alarm (shared built-in buzzer optional) 12. Battery temperature real-time detection (optional external temperature sensor) 13. Open Programming Mode Specifications Product Size 61.5*33.5*13.5mm (2.42*1.32*0, 53in) Mounting Size 58.5*28.5mm (2.30*1, 12in) Display Size 33*16.5mm (1.30*0, 65in) Operating Voltage 10V to 100V Operating Power 8/10mA Backlight for Delay Time Adjustable 10 - 120S (10.20.30.60.120 seconds adjustable) Sleep Mode Power Consumption 15/20uA Voltage 20V, you can mention them ± 0.1/± 0.5% temperature, you can mention them ± 0.5/± 1°C built-in standard (external 30CM probes option) temperature range-19 - 80°C Celsius temperature range-2.2 - 179°F Fahrenheit over temperature alarm adjustable 0 - 79°C (1 second interval after over temperature) Buzzer temperature value flashes temperature alarm adjustable 0 - 179°F (1 second interval after over buzzer temperature) temperature value flashes alarm Low voltage adjustable 10.5 - 60.0V (1 second interval after low voltage meter with buzzer) Voltage value flashes Operating temperature-10 - 65°C Note: The default setting is suitable for use in 12V lead-acid batteries. If you want to set up other types of batteries or enter the setting mode and delay the sleep timer, please feel free to , we will send you electronic instructions. The item color displayed in photos may be showing slightly different on your computer monitor because monitors are not calibrated same. Please allow 1-3mm slight deviation due to manual measurement. Thank you! Package Included: 1 * Battery Indicator Voltmeter with Temperature Display 1 * Cable