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Product at a glance

SES 001 is a thermistor probe for measuring the temperature of a hot water tank or an underfloor heating system. It is optimised for use with SES302, SES303 or SIR321 to provide accurate temperature information for transmission over a Z-Wave ® network. A single SES 001 can be used with each SES302/ SES303/ SIR321


  • Accurate thermistor probe
  • Optimised for use with SES302, SES303, SIR321
  • Small probe size, with three-metre cable length, for easy installation
  • Simple, efficient and cost effective


Performance with SES302 or SES303
Measurement range 0°C to +40°C
Measurement accuracy ±0.5°C
Performance with SIR321
Measurement range (low) 0°C to +65°C
Measurement accuracy (low) ±0.5°C
Measurement range +66°C to +100°C
Measurement accuracy ±1°C
Probe diameter 5 mm
Probe length 20 mm
Cable length 3 m
Storage temperature -40°C to +125°C
Humidity (relative) 0% to 95%
Atmospheric pressure 980 hPA to 1035 hPa