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IoTKey® Transmitter WLT 310



IoTKey® transmitter for preventive maintenance.

EPIC® SENSORS is the choice of professionals!

Wireless LoRa transmitter


  • Configurable, energy efficient LoRa 868 MHz (EU) transmitter for industrial grade wireless measuring and IoT systems using LoRaWAN® protocol
  • Three configurable sensor inputs
  • Self adjusting transmit power
  • Battery or external power supply
  • Self diagnostics including battery monitoring
  • Configurable measurement intervals and alarm limits.

Typical industry sectors

  • Manufacturing
  • Energy
  • Water & Infrastructure.

Application examples

  • Problem diagnostics and preventive maintenance for bearings, pumps, gears, turbines, etc.
  • Detection of efficiency drops and maintenance needs in heat exchangers
  • Advanced and continuous oil quality monitoring for product maintenance, life cycle and cost optimization
  • Environmental measurements and monitoring for warehouses and storage areas, laboratory space, etc.
  • Remote monitoring for levels and temperatures in water supply and waste water networks
  • Monitoring and improving energy efficiency in district heating systems
  • Mobile measuring sets for temporary condition monitoring of machines and production facilities. 

IoTKey® WLT 310 is a wireless LoRa (Long Range Radio) transmitter designed for various industrial applications and capable of sending data over extremely long ranges. The WLT 310 is a LoRaWAN CertifiedCM product.

The smart transmitter’s application parameters are configurable Over-the-Air (OTA) and it continuously measures process values. It is a low-energy transmitter with a battery life of several years, the LoRa technology can be used with zero operating costs, and no 3G/4G network is needed.

  • Inputs: Pt100, Pt1000, thermocouples, 0-10 VDC and 0/4-20 mA
  • Power supply: Lithium battery 3.6 VDC or 12/24 VDC
  • LoRa transmission technology has typically  several km range outdoors, and the signal also transmits well indoors and even below ground
  • Freely configurable OTA measurement intervals and alarms
  • Environmental temperature range with auxiliary voltage –40...+80 °C, with battery -25...+60 °C, depending on the battery type.

Other IoTKey® products:

IoTKey® for
ATEX environments

IoTKey® Gateway

IoTKey® Portal

Datablad WLT 310 - LoRa Transmitter


IoTKey® is a registered trademark of Lapp Automaatio Oy.

IoTKey® Transmitter WLT 310 is a LoRaWAN CertifiedCM product. Lapp Automaatio Oy is a LoRa Alliance® Member.

LoRa Alliance®, LoRa Allicance® Member, LoRaWAN®, and LoRaWAN CertifiedCM are marks used under license from the LoRa Alliance®.