1842 M2 OLED Digital Bilge MeterThe M2 Organic LED Digital Monitor measures essential electrical system parameters with adjustable alarms and an auto-dimming display. The M2 Monitors include a MOSFET External Circuit Relay (ECR) which can be used to control external circuits based on any value measured by the M2.Features:Auto-dimming, bright Organic LED display is easy to read80dB alarm on all modelsIsolated 500mA MOSFET relayBilge float switch not includedSpecifications:Meter: BilgeFunction: Monitors up to 4 bilgesAlarm/Relay Activation: Run time/hr Cycles/24 hr Average CyclesDisplay Size: 55mm x 28mmInput Voltage: 7-70V DCRange: 0.3W-1.0WWARNING: 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. Owner’s Manual (pdf)