Wireless clamp-on sensor

Our wireless duct sensor is a battery powered device designed to measure the temperature conditions on the surface of liquid flow lines.. The sensor can feed the data back to your NiagaraAX platform or our wireless BEMS.  



  • Accurate temperature readings
  • High performance wireless narrow band operation
  • Up to 2Km line-of-sight range
  • Multi-hop wireless protocol
  • License-free use
  • 69 selectable RF channels
  • IP65 rated
  • Conformal coated to protect against condensation
  • Long battery life


Temperature & humidity

Operating temperature range -10 to +60°C

Operating humidity <90% RH (Non condensing)

Storage temperature -20 to +85°C

Storage humidity <90% RH (non-condensing)



Supply voltage 9VDC

Supply source Lithium PP3 (U9VL-J, U9VL-X, U9VL-FP, U9VL-FP & ER9V)

Current consumption average ~5uA

Current consumption peak 25.4mA

Battery life expectancy up to 5 years, dependent on settings and environment


Sensor data

Temp sensor resolution 0.1°C

Temp sensor accuracy +/- 1°C

Temp sensor range -10 to +80°C

RF data

RF frequency 433.05 – 434.79MHz

RF output 8dBm max

RF sensitivity -115dBm

RF bandwidth 25kHz (Narrow band)

RF channels 69

RF connector Female 50Ω SMA (SubMiniature version A)


Dimensions & mounting

Weight N/A

Width 60mm

Height 75mm

Depth 36mm

Clamp band 15mm-175mm pipe diameter

Enclosure Flame retardant polycarbonate, IP65

Mounting Direct surface mount, 4 × mounting holes



EN 301489-1: 2008

EN 55022: 2006

EN 61000-4-3: 2006

EN 61000-4-2: 2001 


EN 60950: Information technology equipment

EN 60730: Automatic electrical controls

EN 50366: Domestic equipment


EU R&TTE directive for 25kHz

EN 300 220: EMC standard for short range devices

EN 301 489: EMC standard for radio equipment and services




Become a partner today

Becoming a partner and using our wireless I/O couldn’t be easier. To get started, just request a call back from our partner manager.

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