Watchman Sonic Advanced Oil Tank Level Gauge, with Audible Alarm - Oil Tank Level Monitor and Tank Level Sensor

We have already suffered (but caught in the act) a Heating Oil theft and were not terribly happy with the rather erratic performance of the battery operated remote sensor alarm that the Police subsequently sold to us, although it is still in use.This well thought out little Watchman Sonic Alarm device does exactly what it 'says on the label' and being a Theft Alarm as well as a Contents Indicator is a big and more reliable improvement on our earlier 'Probe style' contents level gadget. The instructions are pretty good and the Watchman was very easy to fit apart from the need to enlarge the original 'probe hole' in our 10 year old plastic tank. It worked immediately and has proved to be totally consistent so far. The long battery life is appreciated. Rather strangely the instructions included in the pack fail to mention the siren trial facility which is mentioned in the online pdf version. Our own trial of the siren worked well although we thought the sound was not loud enough to be heard in any room remote from our bedroom. Fortunately that bedroom is a good place to receive the Watchman signal.At first we felt the Watchman was maybe a bit vulnerable to unauthorised removal until we realised that such an act would also trigger the siren.This device is a great idea which targets significant loss of oil through leakage or theft actually where it happens. We no longer lose sleep listening for noises in the night.

This product really impressed. Simple to install and incredibly accurate. Putting base unit onto the tank is relatively straightforward. Just ensure you locate it on a flat surface so that it has a clear straight view of oil level. Then measure tank height and set the pins accordingly on the level indicator box. It has audible alarm signals for low level or sudden level change (theft) but these can be turned off if desired.I have a 1000 ltr tank which is 117cms high. The Watchman showed my tank to be approximately half full when set up. I rang for a delivery to top up and check this reading for accuracy. The tank needed 453 ltrs ! Now that is pretty impressive.Seemed expensive at the time but it does give peace of mind and saves having to remember to do a manual check. If you don't need alarm functions then simply purchase the Watchman Sonic (Green model). It's a bit cheaper and simply displays oil levels.Definitely recommended.

Brought to replace one of the same model that is now faulty (after many years of use I will add) at my brother's house.As it was a like for like replacement it was extremely easy to fit, just reused the old mounting plate. But guessing the old one was easy to fit and set up fo would say this one is the same.

I had an old style Watchman Plus, with wire antennae, power tube and bund sensor spiky ball. After 6 years it was displaying "r" error messages on the receiver plug. Changing 4 x AAA batteries in the copper power tube (it's just a piece of pipe where you can knock the end off, don't pay for a new one!) solved the problem, but only during the initial 10 minute radio link up, so something else was at fault. Starting again with a completely new unit seems to be the best answer. The red alarm version mimics the bund sensor in case the inner tank leaks, and it fits quickly into the old inner tank hole and transmitter screw holes. The "sound reflection" technology looks the same as the old Watchman, but now there is no plastic tube dipping into the tank. Only time will tell the battery life, but at least it is easier to install new batteries.

This is a really good product that is easy to set up and use, and certainly better than some of the alternatives currently on the market.One simple piece of advice, read the instructions from front to back before starting the installation.

Works fine but very difficult to change battery the metal tab holding it in place is very easy to snap.( I don’t think it needs to be that brittle a metal unless they want you to buy a whole new unit instead of just a battery)

Prompt delivery so the seller did fine. This was a direct replacement for an alarm of the same type. When I took the old one off and opened it I found it was full of water and I can't work out how the water got in. Fingers crossed for the new one.

Had the previous model for many years until it packed up this year(tried all the usual things to no avail)These gadgets are very convenient and so much better than old sight gauges -and dipping the tank- for heavens sake!So, replaced it with this new sonic watchman.Seems very much an upgrade compared to old model.1)Very easy and quick to set up compared to old model ( 2-3 minutes at most to calibrate and fit to tank)20 Clear, illustrated instructions2) Fitted directly into the hole for the old one and the screw holes also lined up3) Worked straight awayVery pleased so far- hope it lasts many years!