Reads the oil level in the tank & transmits to an indoor receiver.- Easy wireless installation, one 32mm hole in tank or 2” M BSP fitting.- Up to 200m ‘line of sight’ range. - Suitable for steel & plastic tanks. Fits tanks up to 3m in height.- When oil drops to below 10% of tank volume a fuel dispensing symbol appears on the display. This symbol flashes when oil level drops below 5% indicating a new delivery is required.- Supplied with reciever & display.- Display plugs into 230v Socket