STS2 Ring Terminal Temperature Sensors

Our STS2 series ring terminal temperature sensors are available with insert-moulded housings as standard with M3 & M4 fixings.  The NTC thermistor is embedded inside the over-moulded design to ensure a fast thermal response.  This type of housing also combines good electrical isolation as well as good thermal insulation, helping to minimise heat-loss away from the sensor.

STS2 ring sensors are available with a broad range of lead-wire types and lengths, double-insulated options, connector types and a wide range of NTC thermistors to suit your application.  Larger ring sizes (M5, M6, M8 etc.) and higher-voltage ratings can be achieved by choosing a suitable combination of ring terminal and wire type.  Call us today to discuss our stock and bespoke sensor solutions.


  • Electric vehicle batteries
  • E-vehicle fast-charging plugs
  • Rechargeable batteries
  • Heat-sink monitoring
  • Hot water appliances


  • Fast response design (Tc ≤ 5s)
  • Accuracy ±1% or better
  • Interchangeability between NTCs
  • Standard ring sizes M3 & M4 (M5, M6, M8 or larger available in metal)
  • Operating range up to +150°C