M2 OLED Temperature MonitorThe 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 relayIncludes external DC Shunt or AC Current Transformer when requiredVersatile external temperature monitoringMonitor up to 4 temperature sensorsTemperatures range from -40degC to 120degC (-40degF to 250degF)Measures in Fahrenheit or CelsiusABYC compliant for engine exhaustWaterproof temperature sensors includedSpecifications:Meter: TemperatureFunction: Monitors TemperatureDisplay Size: 55mm x 28mmInput Voltage: 7-70V DCRange: 0.3W-1.0WSensor Locations: up to 4Temperature Range: -40degC - 120degC (-40degF - 250degF)Temp Sensor: 4 x PN 1821Weight: 0.25lb (0.11 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.