<p>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, anti-puncture sunscreen, soft button feels good experience 3. Color LCD material, clear light display, soft night display 4. Custom battery type, suitable for lead acid, lithium battery, lifepo4, nickel hydrogen battery 5. Display percentage remaining power, voltage, temperature value (degrees Celsius, Fahrenheit can be set) 6.10-100V wide voltage input, reverse connection protection 7. Custom delay 10-120 seconds sleep 8. Shutdown sleep low power consumption 9. Simple installation, self-contained buckle free screw 10. Low pressure alarm 11. Over temperature alarm (shared built-in buzzer optional) 12. Battery temperature real-time detection (optional external temperature probe) 13. Open programming mode Specifications Product size 61.5*33.5*13.5 mm (2.42*1.32*0.53in) Mounting size 58.5*28.5 mm (2.30*1.12in) Display size 33*16.5 mm (1.30*0.65in) Operating voltage 10V to 100 V Operating power 8/10 mA backlight on Delay time adjustable 10~120S (10.20.30.60.120 seconds adjustable) Sleep power consumption 15/20 uA 20V Voltage accuracy ±0.1 / ±0.5 % Temperature accuracy ±0.5 / ±1 °C Built-in standard (external 30CM probe 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 flashing Over temperature alarm adjustable 0 ~179 °F (1 second interval after over temperature buzzer) temperature value flashing Low-voltage alarm adjustable 10.5~ 60.0 V (1 second interval after low voltage buzzer) voltage value flashing Working temperature -10 ~65 °C Notice: The default setting is suitable for use in 12V lead acid batteries. If you need to set up other types of batteries, or go into settings mode and delay time switch settings, please contact us, we will send electronic instructions to you. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Please allow 1-3mm slight deviation due to manual measurement. Thank you! Package included: 1 * Battery Capacity Indicator Voltmeter with Temperature Display 1 * Cable</p>