Gas Proving and Fan Interlock

Email Updates

Enter your email address:

Need Help or Advice? Get in Touch With us! Call Us On 0800 644 0233

Latest on Twitter

  • Sensors Ltd Twitter feed

More on Twitter »


£523.80 ex VAT

£628.56 inc VAT

  • Buy
  • Service
  • Installation
  • Commissioning


  • Flexible Power Supply Options
  • Wall or Panel Mounting
  • Relay Outputs as Standard
  • 4-20mA Outputs as Standard
  • RS485 Modbus as Standard
  • Control up to 8 Devices as Gas Detectors or I/O Modules
  • LCD Display With Multi Colour Backlight, Flashes Red on Alarm, Flashes Yellow on Fault etc


Sensors Ltd offer the TOC-625 which is a multi-channel detector controller in an easily installed and implemented small format package.

The unit is supplied pre-calibrated for the target gas, this is the option for Natural Gas (Methane), standard options are also available for LPG.

The system can be used with any of the Tocsin Addressable range detectors or I/O modules providing maximum flexibility. The controller can be wall mounted or panel mounted and has a pump and duct mount options.

The controller has two SPCO relays as standard with three 4-20mA outputs and an RS485 Modbus interface.


  • Types of gases detected: Natural Gas (Methane)
  • Power: 110/230V AC 50/60Hz 25W
  • Outputs: 2 off SPCO Relays 4A Non-Inductive, 3 off 4-20mA Linear Outputs
  • Inputs: 8 off Addressable Series Detectors or I/O Modules
  • Display: 2 Lines x 8 Digit LCD Display Multi-Colour Backlight (Red-Alarm, Yellow-Fault, Blue-Normal)
  • Protection: IP54
  • Operating temperature: -5 to 55 Deg C
  • Operating humidity: 0-95% RH Non-Condensing
  • Sensor Warmup: 1 minute
  • CE declaration: 2004/108/EC, 2006/95/EC, EN61779-1:2000, EN50271:2001
  • Overall dimensions: 141mm (H) x 201mm (W) x 79mm (D)
  • Weight: 840g