0.28inch 12V is voltage + temperature display.
0.56inch 8-18V is the voltage display.
Introduction
1. The watch head is designed with a fully enclosed shell, so it can work normally without being damaged after being immersed in water for a short time.
2. The meter head can display temperature and voltage at the same time.
3. The meter head is small and compact, and uses three 0.28-inch LED digital tubes for display.
4. Two-wire wiring, simple wiring; direct measurement without external power supply.
5. This meter can be used to detect the battery voltage of motorcycles, automobiles, etc., and grasp the battery status in time.
Parameter:
Product size: 56mm * 31mm * 13.5mm
Measurement accuracy: ± 1V; ± 1 ¡É
Temperature range: -10 ¡É ~ 150 ¡É
Voltage range: 12V
Line length: 100cm
Power supply mode; DC two-wire
Display mode: Three-digit 0.28 "LED digital tube
Waterproof rating: IPX6
Shell material: AS
Wiring way:
Red is connected to the positive electrode, and black is connected to the negative electrode.
Note:
1. The power supply voltage used in this meter should not be higher than 18V. Please pay enough margin to the meter to avoid permanent damage to the meter due to motor sparks, power ripple or other excessively high sudden voltages.
2. Because the meter uses LED display and requires a certain working current, it cannot be used for high internal resistance voltage measurement, such as weak signal voltage and button batteries.
3. Pay attention to the wiring method, the red wire is connected positive, and the black wire is connected negative, not reverse.
Package list:
1 pcs LED Digital Temperature Controller