1. Material: PC
2. Voltage: 9-24V
3. The potting process prevents water from soaking, no fear of bad weather
4. Long press the button to turn on and off freely
5. Customize low voltage/high water temperature alarm
6. Factory default low voltage alarm value: 12V
7. High water temperature alarm value: 85 degrees Celsius
8. Monitorable temperature range: -20 degrees Celsius~120 degrees Celsius
9. Product size diameter: 3.6cm/1.417inch
10. Rearview mirror hole diameter: 1cm/0.394inch

Wiring method:
1. Power cord length of voltmeter (red and black): 50cm/19.685inch
2. Wiring method of voltmeter: red wire connected to "+", black wire connected to "-"
3. Power cord length of water temperature meter (red and white): 99cm/38.976inch
4. Water temperature sensor cable length (yellow and blue): 115cm/46.063inch
5. Wiring method of water temperature meter: red wire connected to "+", white wire connected to "-"
6. Power cable length of water temperature + voltage meter (red and white): 99cm/38.976inch
7. Water temperature sensor cable length (yellow and blue): 115cm/46.063inch
8. Wiring method: red wire connected to "+", white wire connected to "-"