UK industrial technology since 1998 Authorised Milesight distributor Ships from the UK

EM Series

The Milesight EM series is a family of rugged LoRaWAN environmental sensors, and Indiott stocks the range in the UK. This archive covers EM300, EM400 and EM500 models for CO2 and air quality, temperature, pipe pressure, ultrasonic distance and level, soil moisture, light and leak detection. They are sealed for outdoor and harsh sites, run for years on internal batteries and report over licence-free LoRaWAN, so no mains or data cabling is needed. UK buyers use the EM series for utilities, agriculture, cold storage and facilities monitoring. For indoor air quality deployments, our occupancy and air quality sensors UK guide covers CO2 placement and accuracy. Ships from UK stock.

Showing all 15 results

  • Milesight EM300-DI LoRaWAN pulse counter with dry-contact pulse cable

    Milesight EM300-DI LoRaWAN Pulse Counter

    EM300-DI-868M £47.88 ex VAT (£57.46 inc. VAT)

    LoRaWAN pulse counter for retrofitting mechanical water meters. Dry-contact input to 2000 Hz, on-device consumption and flow/outage alarms, IP67, 5-year battery.

  • Milesight Membrane Leakage Detection Sensor: EM300-MLD

    Milesight EM300-MLD Membrane Leakage Detection Sensor

    EM300-MLD-868M £62.85 ex VAT (£75.42 inc. VAT)

    DATASHEET The EM300-MLD is an innovative leak sensor that incorporates a flexible printed membrane. This design enables precise detection and customized coverage in a compact form factor, making it suitable for various applications. With a single embedded battery, EM300-MLD offers a long operational life of up to 10 years, extendable to two batteries if desired….

  • Milesight Spot Leak Detection Sensor: EM300-SLD

    Milesight EM300-SLD Spot Leak Detection Sensor

    EM300-SLD-868M £53.87 ex VAT (£64.64 inc. VAT)

    DATASHEET EM300-SLD is a compact spot leakage detection sensor for detecting presence of water (or other liquids) and transmitting alarm using LoRaWAN® technology. With this low power consumption technology, EM300-SLD can work up to 5 years with 4000 mAh battery. Combining with Milesight LoRaWAN® gateway and Milesight IoT Cloud solution, users can manage all sensor…

  • Milesight Temperature and Humidity Sensor: EM320-TH

    Milesight EM320-TH Temperature and Humidity Sensor

    EM320-TH £41.90 ex VAT (£50.28 inc. VAT)

    DATASHEET EM320-TH is a simple, compact and powerful LoRaWAN® temperature & humidity sensor. It is equipped with high-precision sensors and IP67 waterproof design, applicable for accurate temperature and humidity data detection in various harsh environments. FDA-approved food-grade material’s enclosure and magnet design allow it to be placed in freezersand refrigerators and in contact with food…

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  • Milesight Tilt Sensor: EM320-TILT

    Milesight EM320-TILT Tilt Sensor

    EM320-TILT-868M £62.85 ex VAT (£75.42 inc. VAT)

    DATASHEET EM320-TILT is an LoRaWAN® tilt sensor mainly for angle measurement and asset movement detection. With a compact size and 3-axis accelerometer, EM320-TILT can be installed to the objects easily to measure its X, Y, Z tilt angles. In addition, EM320-TILT supports customizing initial position to detect movement based on angle changes and send threshold…

  • Multifunctional Ultrasonic Distance/Level Sensor: EM400-MUD

    Milesight EM400-MUD Multifunctional Ultrasonic Distance/Level Sensor

    EM400-MUD Price range: £86.79 through £101.75 ex VAT (£104.15£122.10 inc. VAT)

    EM400-MUD is a multifunctional ultrasonic distance sensor designed to detect small-range areas and small blind spots. It features switchable pre-set modes for different applications. EM400-MUD is also equipped with a 3-axis accelerometer and temperature sensorto detect device status. With high protection IP rating and waterproof enclosure, EM400-MUD can withstand harsh environments and operate up to…

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  • Milesight ToF Laser Distance Sensor: EM400-TLD

    Milesight EM400-TLD ToF Laser Distance Sensor

    EM400-TLD Price range: £86.79 through £101.75 ex VAT (£104.15£122.10 inc. VAT)

    DATASHEET EM400-TLD is a distance sensor based on ToF (time of flight), which is mainly used for detecting the fill level and position status. With an appropriate FOV with the maximum field angle of 27°, it has almost no blind spot when installed on small-sized waste bins or containers. The embedded temperature sensor enables it…

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  • Ultrasonic Distance/Level Sensor: EM400-UDL

    Milesight EM400-UDL Ultrasonic Distance/Level Sensor

    EM400-UDL-868M Price range: £194.52 through £366.60 ex VAT (£233.42£439.92 inc. VAT)

    DATASHEET EM400-UDL is a non-contact ultrasonic distance sensordesigned for outdoor applications such as monitoring waterlevel, fill level of tanks and silos, presence of objects, or snowlevel. It features multiple selective probes with varyingdetecting ranges to meet diverse requirements. With high protection IP rating and waterproof enclosure, EM400-UDL canwithstand harsh environments, and it can work up…

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  • CO2 Sensor (4 in 1): EM500-CO2

    Milesight EM500-CO2 CO2 Sensor (4 in 1)

    EM500-CO2-868M £179.56 ex VAT (£215.47 inc. VAT)

    DATASHEET EM500-CO2 is designed for measuring CO2, temperature, humidity and barometric pressure in harsh environments andtransmitting data using LoRaWAN® technology. With this lowpower consumption technology, EM500-CO2 can work up to 10years with 19000 mAh battery. Combining with MilesightLoRaWAN® gateway and Milesight IoT Cloud solution, users canmanage all sensor data remotely and visually. EM500-CO2 is widely…

  • Milesight Light Sensor: EM500-LGT

    Milesight EM500-LGT Light Sensor

    EM500-LGT-868M £157.12 ex VAT (£188.54 inc. VAT)

    DATASHEET EM500-LGT is designed for measuring light in harsh environmentsand transmitting data using LoRaWAN® technology. With this lowpower consumption technology, EM500-LGT can work up to 10years with 19000 mAh battery. Combining with MilesightLoRaWAN® gateway and Milesight IoT Cloud solution, users canmanage all sensor data remotely and visually. EM500-LGT is widely used for outdoor applications like…

  • Milesight Pipe Pressure Sensor: EM500-PP

    Milesight EM500-PP Pipe Pressure Sensor

    EM500-PP-868M £197.52 ex VAT (£237.02 inc. VAT)

    DATASHEET EM500-PP is designed for measuring pipe pressure in harshenvironments and transmitting data using LoRaWAN® technology. With this low power consumption technology, EM500-PP can workup to 10 years with 19000 mAh battery. Combining with MilesightLoRaWAN® gateway and Milesight IoT Cloud solution, users canmanage all sensor data remotely and visually. EM500-PP is widely used for applications…

  • Milesight Industrial Temperature Sensor: EM500-PT

    Milesight EM500-PT Industrial Temperature Sensor

    EM500-PT-868M Price range: £116.71 through £187.04 ex VAT (£140.05£224.45 inc. VAT)

    DATASHEET EM500-PT100 resistance temperature sensor is designed for measuring wide range of temperature in harsh environments and transmitting data using LoRaWAN® technology. With this low power consumption technology, EM500-PT100 can work up to 10 years with 19000 mAh battery. Combining with Milesight LoRaWAN® gateway and Milesight IoT Cloud solution, users can manage all sensor data…

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  • Milesight Soil Moisture, Temperature and Electrical Co

    Milesight EM500-SMTC Soil Moisture, Temperature and Electrical Conductivity Sensor

    EM500-SMTC-868M £371.09 ex VAT (£445.31 inc. VAT)

    DATASHEET EM500-SMTC is designed for measuring soil moisture, temperature and electrical conductivity in harsh environments andtransmitting data using LoRaWAN® technology. With this lowpower consumption technology, EM500-SMTC can work up to 10years with 19000 mAh battery. Combining with MilesightLoRaWAN® gateway and Milesight IoT Cloud solution, users canmanage all sensor data remotely and visually. EM500-SMTC is widely…

  • Milesight Submersible Water Level Sensor: EM500-SWL

    Milesight EM500-SWL Submersible Water Level Sensor

    EM500-SWL-868M Price range: £251.38 through £272.33 ex VAT (£301.66£326.80 inc. VAT)

    DATASHEET EM500-SWL is designed for measuring liquid level in harsh environments and transmitting data using LoRaWAN® technology. With this low power consumption technology, EM500-SWL can work up to 10 years with 19000 mAh battery. Combining with Milesight LoRaWAN® gateway and Milesight IoT Cloud solution, users can manage all sensor data remotely and visually. EM500-SWL is…

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  • Ultrasonic Distance/Level Sensor: EM500-UDL

    Milesight EM500-UDL Ultrasonic Distance/Level Sensor

    EM500-UDL-868M Price range: £202.01 through £344.16 ex VAT (£242.41£412.99 inc. VAT)

    DATASHEET EM500-UDL is designed for objects distance or level detection in harsh environments and transmitting data using LoRaWAN® technology. With this low power consumption technology, EM500-UDL can work up to 10 years with 19000 mAh battery. Combining with Milesight LoRaWAN® gateway and Milesight IoT Cloud solution, users can manage all sensor data remotely and visually….

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Which em series do I need?

All Indiott hardware comparisons →

EM Series — frequently asked questions

What is the difference between the EM400 and EM500 families?

The EM400 series are compact self-contained field sensors with the sensing element built in. The EM500 series are ruggedised units designed to take an external probe or transducer, which is what makes pressure, submersible level and soil measurement possible. Check the model datasheet for the probe type and cable length supplied.

Which sensor do I use for a bin, skip or tank?

An ultrasonic distance sensor mounted in the lid, measuring the gap to the surface below. The two numbers that decide whether it will work are the measuring range and the blind zone - the minimum distance below the sensor that it cannot measure. Read the measuring range, not the tilt or detection angle.

Can I install these outdoors or in a chamber?

Many EM series models carry an IP rating for outdoor and below-ground installation, but not all of them, and radio performance from inside a metal chamber or under a cast-iron lid is a separate question from the IP rating. Tell us the installation and we will flag it if the location is likely to attenuate the signal.

Are the batteries replaceable?

This varies by model, and where a replaceable cell is used the type is stated on the datasheet. Plan the replacement interval against your reporting interval - reporting every few minutes rather than hourly changes battery life dramatically.

Is the model I found still current?

Some early EM series models have been superseded by newer equivalents. If you are specifying for a new project rather than adding to an existing estate, ask us to confirm the current model and its successor before you order. We would rather tell you than sell you into an end-of-life line.

Which frequency variant do I need in the UK?

The EU868 variant, order code ending -868M. A -915M unit will not join a UK LoRaWAN network.