Apollo Ultrasonic Level Sensor Standard Operating Voltage (Range): 150-250 V/AC 1S

Instructions easy to follow, easy to set up and very easy to install. Would recommend this product

My previous one lasted 14 years with two battery changes so when it finally died I thought I'd buy the same. Just check the dip switches are set correctly for your size of tank before installing, link the tank monitor to your indoor plug gauge and away you go. All very simple.

Oil tank levels

Set up easily and works well replaced a watchman plus that was in use for 14 years hope this one lasts as long

This unit was easy to fit to my oil tank. I paired it with the receiver unit and then installed it on the tank. You have to measure the depth of the tank and set up some dip switches on the receiver unit and if you do this correctly then the Apollo seems to be fairly accurate. I hope it will last a few years but only time will tell.

Quality product easy to install and works well over a 60mtr range in my case

It's not really that accurate for larger tanks, might be better suited for smaller ones

Replaced my old Apollo which lasted 12 years. Easy to fit. Easy to read level indicator. Looking forward to another 12 years.