AC DIGITAL METERS (BLUE SEA SYSTEMS) - Blue Sea Systems 8237 AC Digital Voltmeter - 80 to 249V AC 

Large, bright LED characters have 3 levels of brightness for easy monitoring of key functions in a splash-proof case. Easy to surface mount in a 2" round hole. Face size is 2.625" W x 1.260" H.8237: 80-249V AC scale in .1V increments. Manual sleep mode.8247: Includes all the features of 8268 & 8237 plus a Power Display measurement from 0-35kW in 10W resolution from 0-9990W and .01kW resolution from 10-35kW. Displays AC frequency from 40-90Hz. Also features a programmable sleep mode, high & low voltage alarms, and high current alarm. Includes current transformer coil.