Blocked Sewer & Stack Alarms:

BDT Blocked Sewer Alarm Transmitter

Wireless Float Switch Transmitte

Pole Mounted Booster Repeater

Blocked Urinal / Sewer Pipe Alarm

Blocked Sewer Alarms for Small Businesses

Blocked & Clogged Sewer Alarms for Hospitals & Healthcare

Blocked Sewer Alarm – High Sump Alarm

Blocked Sewer Alarm Scanner Receiver

Blocked Sewer Alarm – High Sump Alarm with Flashing Beacon

Sewer Sentinel FM – Blocked Sewer Monitoring & Alarm PC Software

Blocked Stack Alarm

Sump and Sewer Level Monitoring Float Switch Transmitter

Urinal Blockage, Small Bore Pipe Blockage Alarm

IoT+ Enabled Blocked Sewer Alarms. Blocked Stack, Blocked Urinal, and Blocked Drains and Sewer Alarms we have Proven Technology, with a 10-year plus service history.

We have a wide portfolio of UK Designed and Manufactured Blocked Sewer Detectors / Transmitters and Receivers to help customers detect and report regular everyday occurrence from becoming an embarrassing and economic disasters! This helps to prevent pollution too as many do not realise that blockages and sewer overloads are one of the primary causes of plastics getting into our oceans.

Sewers and drains block regularly. In fact look at the old Yellow Pages or other trade directories and you will see page after page of entries under Drain Blockage and Cleaning services.

Backup and surcharge occur for a variety of reasons ranging from sewer collapse, tree roots through to the build up of FOG (fat, oil and grease), congealed macerated pulped hospital waste, wet wipes, etc. Early warning of sewer blockages or partial blockages can be detected by monitoring the sewer levels at various locations over a site within manhole chambers in order to detect abnormally high levels both during dry and wet weather conditions.

We Supply Blocked Sewer and Drain Alarms for:

Developed in 2010 and originally supplied exclusively to the water utility sector – the BDT technology is probably the most widely deployed solid-state wireless blocked sewer alarm and is used across the board from the Water and Wastewater Utilities, Hospitals to Railway Stations.

Blocked Sewer Alarms Wireless (med)

The BDT can Detect Blocked Sewers Without Lifting a Manhole Cover:

Radio Data Networks award winning BDT [Bulk Dielectric Transducer] is acknowledged to be the pioneer of blocked sewer detection technology. First introduced in 2010 it has proven far more effective than ultrasonics or float switches. It’s ultra low power operation gives instant alerts whenever a high level is detected.

Blocked Sewer Alarm Installed

Blocked Sewer Alarm Installed

Using wireless technology it is able to operate from below manhole covers without the need for cables and wires. It can even detect blockages and stoppages in sewer mains / lines buried under floors of virtually any construction and with any type of surface finish without the need to run cables and to construct ducts in floors.

wireless blocked sewer alarm

First introduced in 2010, the Radio Data Networks BDT saw the dawn of a radical approach to generating sewer alarms and sewer monitoring  the BDT Blocked Sewer Alarm Transducer. The BDT crucially included a fully battery powered sensor technology and a real time communications system that permitted sewer levels to monitored for blockages 24/7 almost anywhere on a site irrespective of its size, from below manhole covers, without modification or the need to run cables. Now in 2019 and circa 5 billion messages later the BDT has proven itself to be reliable, easy to install and effective.

Blocked Sewer Alarm Messages/Warnings Delivered Locally or Centrally:

Messages from our Blocked Sewer Alarm systems can be delivered locally to alarm panels , flashing beacon controllers, or remotely to external solar powered flashing beacons or into a buildings BMS system or SCADA. Using a PC based software package Sentinel FM and a radio interface to the PC we can also offer 24/7 monitoring and data logging with graphical visualisation. Link to Sentinel FM.

Blocked Sewer Alarm Receivers

For More Details please follow the link here Blocked Sewer & Surcharge Monitoring Application Note AN05-01

Key Features

  • Proven 10-year service history
  • IoT+ Compatible
  • UK Designed and Manufactured
  • The UK’s Number 1 Sewer Alarm used by Utilities and the NHS Alike
  • Reported to have saved tens of millions for the UK’s NHS
  • Easy to Install Wireless Communications – No Cables to Run
  • Easy to Integrate with IoT+
  • Easy to Install from Surface – Eliminates Confined Space Entry
  • No-Programming or Software – All systems supplied ready to go out of the box
  • Visual Set Trip Levels 0 – 4m as standard, option up to 15m
  • Automatic Constant Self Test
  • Install Without Need to Modify Manholes
  • Operates from below Inset / Covered Manholes
  • 10-Year Battery Life for Sensors
  • Sensor Alarm transmitters Waterproof Construction to IP68
  • ATEX assessed to Zone 2 – Safe to Install in Chambers
  • Provides and tell-tale Indication of Transient Sewer Surcharges
  • Supplied Complete With Wall Bracket
  • Approaching 10-years of services

Blocked Sewer/Drain Alarm System with BMS Interface


Blocked Sewer Alarm Installed

Blocked Sewer Alarm Installed

Blocked sewer alarm system for small businesses

Blocked Stack Monitors

For both vertical and horizontal stacks, we have a solution that can monitor both cast iron and plastic stacks.

Portable Block Sewer Monitor

We also offer a range of hand portable systems that can be used on foot or from a vehicle.

Blocked Sewer Alarm Portable Status Scanner