Tekelek TEK871 NB-IoT Ultrasonic Tank Level Sensor


Tekelek’s Ultrasonic LTE CAT-M1/NB-IoT is a configurable battery operated ultrasonic tank level monitor with an integrated Cellular modem supporting GSM (2G), LTE CAT-M1 & NB-IoT networks.

Add to Quote


Tekelek’s NB-IoT Ultrasonic tank level sensor offers a configurable device with an integrated cellular modem which supports the connection of 2GSM (2G), LTE/CAT-M1 and NB-IoT networks.

An ATEX approved device, with the TEK871 you can remotely monitor liquid levels within tanks, helping you to ensure a continued supply or to optimise deliveries/collections wherever you may be. Example use cases for this NB-IoT Ultrasonic tank level sensor include:

  • Fuel – oil, Kerosene, Diesel
  • Lubricants
  • Additives
  • Other hazardous/non-hazardous materials
  • DEF/AdBlue
  • Coolants
  • Water
  • Waste Oil
  • Waste Water
  • Selected Chemicals *contact us to check compatible products

Suitable for use with fixed, portable or underground tanks, data recorded by the TEK871 will be transmitted from the sensor by the connected NB-IoT network which is fulfilled by inserting a compatible SIM card.

This smart device enables you to:

  • Optimise deliveries and collections
  • Carry out spot and continuous inventory measurements
  • Ensure a continued supply

With the option to utilise programmable alerts, the TEK871 NB-IoT ultrasonic level sensor can be used to alert you to:

  • Full alert
  • Spill alert (bunded tanks)
  • Low & high levels
  • Empty alert
  • Fill alert
  • 24/7 remote tank monitoring

Utilising NB-IoT technology, this device can be easily connected by inserting an NB-IoT SIM card. Check coverage in your area.


  • Suitable to be used alongside GSM (2G), LTE-M (Cat-M1) or NB-IoT networks
  • 24/7 monitoring
  • Optimise deliveries & collections
  • Remote Configurability
  • Easy to install
  • Also reports local temperature, radio signal strength and battery level
  • External antenna can be purchased for installation in underground locations
  • Wall/pole attachments are also available to purchase separately
  • Up to 5 years battery life


Battery 3.6V Lithium Thionyl Chloride Exi “Bobbin type” consruction
Wireless Technology GSM (2G), LTE-M (Cat-M1) or NB-IoT
Radio Frequency Cat M1/Cat NB1: LTE FDD: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B26/B28 LTE TDD: B39 (For Cat M1 Only) EGPRS: 850/900/1800/1900MHz
Ultrasonic Range >12 cm to <400 cm /<4.7″ to <157″ at 20°C
Weight 350g (excluding cable & gland/external connectors)
Operating temperature -20°C to +55°C (-4°F to +131°F)
Environmental Protection IP68 Rated

Key documents & information

Discounted Trade Pricing: Contact us for trade pricing, to place an order or to discuss your IoT projects.

All of our products are available to customers throughout Europe. For more information on shipping costs, currency conversions and lead times, please contact our technical sales team.

Our technical sales team are also happy to advise customers on the best NB-IoT Level sensors to suit specific project requirements.

For simple deployment and ongoing management of your NB-IoT solutions, check out our cellular IoT middleware platform, Symbius. Designed to enable you to make the most of your data, Symbius will take the headache out of decoding your data for you.

Looking for NB-IoT Connectivity?
Let us connect you

Additional information

Weight 220 g


Black, Grey

Environmental Protection

IP68 Rated

Power Source


Measurements Taken



You may also like…