Watchman Alarm (when purchased with Harlequin tank)

Watchman Alarm (when purchased with Harlequin tank)

Product Description

Watchman Alarm - Purchased with Deso Tank

PROTECT YOUR OIL! With the Watchman Alarm you can monitor your oil tank contents 'at a glance' from your home, no need to walk outside to the tank. In the event of the oil level in the tank dropping at an unusual rate the receiver will emit an audible alarm.;

How it works
The Watchman Alarm Oil Tank Contents Gauge and Alarm consists of a battery operated ultrasonic transmitter installed on your oil tank, which wirelessly transmits a signal for up to 200 metres to the receiver plugged in to a standard 230 volt electrical socket in your home or office so you never run out of oil again!

Product Features:

  • Alarm feature (if the oil drops more than 1.5cm a minute an audible alarm will sound)
  • Quick and easy to install
  • Suitable for all types of tank, steel or plastic
  • Can transmit up to 200 metres
  • Can measure the tank contents on tanks up to 3 metres inside height
  • Optional audible setting with a buzzing tone, when tank contents run low.
  • Compatible with most fuels including home heating oil (kerosene), diesel and red diesel.
  • Can be fitted to steel tanks if 32mm holes are drilled (please check your tank first)
  • Comes with complete instalation & set up instructions
  • 12 Months replacement guarantee
  • See "Video" tab below for installation instructions


Watchman Helpline - 02838 364572 

Product Code: 004030

Currently out of stock

£90.00 £68.00 ex VAT
(£81.60 inc VAT)
Custom Delivery Required

Delivery price on application.

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Returns Information

Customers may return items within 14 calendar days (as per our Terms & Conditions) - refer to 4.6 & 4.7. **

Please be aware that returning a tank can be complicated and expensive so please check that you are ordering the correct item (we suggest checking the dimensions very carefully).

Delivery Information


The delivery of a tank can be confusing as each manufacturer offers a slightly different service and lead time. Please refer to our Delivery Information page.  Standard tank deliveries are "kerbside" which means the tank will be delivered to the kerb only and not positioned further. Should you have specific delivery requirements or restrictions, please contact us to discuss.


Most accessories will be delivered within 1-3 working days. If you require them quicker, we can on occasions offer a next day service (please contact us to discuss). If the item(s) are out of stock we will advise you of the expected lead time and you will of course have the opportunity to cancel with a full refund.


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