1739200 Mini OLED Tank Meter - BlueMonitors essential electrical system parameters on a bright, waterproof, daylight readable OLED screen.Features:. Compact size enables mounting in any convenient location. Reverse polarity protected. Mounts in a common 1-1/8 in hole. Color: Blue. Meter: Tank Meter. Nominal Voltage: 12V DC/24V DC. Resolution: 5%. Input Voltage: 8V-36V DC. Operating Current: 17mA. Switching Cycles: 10,000. Weight: 0.30lb (0.14 kg). WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.