Milesight EM500-SMTC Soil Moisture, Temperature and Electrical Conductivity Sensor
Authorised Milesight UK Distributor£371.09 ex VAT (£445.31 inc. VAT)
EM500-SMTC is a LoRaWAN soil sensor measuring soil moisture (0% to 100%), soil temperature (-40°C to 80°C) and electrical conductivity from 0 to 20000 µs/cm — the conductivity range being the decisive spec. The buried probe is IP68 on a 2 m cable to an IP67 transceiver, and one 19000 mAh battery runs up to 10 years at a 10-minute interval.
Electrical conductivity measuring range0 ~ 20000 µs/cm
In stock · typically dispatched within 14 working days from the UK
Kits that use this part: Greenhouse monitoring kit
● Quotes answered within one working day · UK support
Delivery & assurance
- Ships from the UK
- £14.25 flat UK delivery
- Secure checkout — card, Klarna, invoice
- Manufacturer's warranty
Questions about this product? Call our UK team: 023 9223 3611
Description
EM500-SMTC is designed for measuring soil moisture, temperature and electrical conductivity in harsh environments and
transmitting data using LoRaWAN® technology. With this low
power consumption technology, EM500-SMTC 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-SMTC is widely used for outdoor applications like smart
agriculture, smart horticulture, etc.
• Features
• High precision for multiple kinds of soil
• Corrosion resistance and tough probe
• Ultra-wide-distance transmission up to line of sight of 10km
• IP67 waterproof enclosure for harsh environment applications
• Built-in 19000 mAh replaceable battery and work for 10 years
without replacement
• Equipped with NFC for easy configuration
• Compliant with standard LoRaWAN
® gateways and network
servers
• Quick and easy management with Milesight IoT Cloud and
Milesight Development Platform solution
• Applications
• Irrigation Control
• Greenhouse control
• Smart agriculture
• Smart horticulture
• Golf course maintenance
Temperature: -40°C ~ 80°C
Moisture: 0% ~ 100% RH
Electrical Conductivity:
0 ~ 20000 µs/cm
Transceiver: IP67 Sensor: IP68
1 * 19000mAh Li-SOCL2 Battery Battery Life: 10 Years (10 min Interval) Resolution: 0.01% NFC Enabled Cable Length: 2m (Customizable)
US$3.00 dollars for one meter extension cable.
Additional information
| Weight | 0.328 kg |
|---|
EM500-SMTC-868M specifications
| Technology | LoRaWAN®, Milesight D2D |
|---|---|
| Antenna | Internal antenna |
| Frequency | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx power | 16 dBm (868 MHz)/20 dBm (915 MHz)/19 dBm (470 MHz) |
| Sensitivity | -137 dBm @300bps |
| Mode | OTAA/ABP Class A |
| Moisture range | 0% ~ 100% |
| Moisture accuracy | ±2% (0~50%), ±3% (50%~100%) |
| Moisture resolution | 0.01% |
| Temperature range | -40°C ~ 80°C |
| Temperature accuracy | ±0.5°C |
| Temperature resolution | 0.1°C |
| Conductivity range | 0~20000 µs/cm |
| Conductivity accuracy | ±3% (0~10000 µs/cm), ±5% (10000~20000 µs/cm) |
| Conductivity resolution | 10 µs/cm (0~10000 µs/cm), 50 µs/cm (10000~20000 µs/cm) |
| Cable length | 2 m |
| Probe length | 50 mm (1.97 in) |
| Power supply | 1 × 19000 mAh ER34615 Li-SOCl2 battery |
| Battery life | Up to 10 years (SF7 & SF10, EU868) at 10 min interval, 25°C |
| Advanced features | Data storage (1,000 entries), data retransmission, data retrievability, threshold alarm, temperature change alarm, Milesight D2D controller |
| Operating temperature | -30°C ~ 70°C |
| Relative humidity | 0% to 100% (non-condensing) |
| Ingress protection | Transceiver: IP67; soil sensor: IP68 |
| Housing | Transceiver: ABS + PC, grey; soil sensor: epoxy resin + stainless steel, white + silver |
| Weight | Transceiver: 328 g (with battery and mounting bracket); soil sensor: 138 g (with cable) |
| Dimensions | Transceiver: 105.4 × 71 × 69.5 mm; soil sensor: 88 × 68 × 26 mm |
| Installation | Transceiver: pole, wall or DIN rail mounting; soil sensor: buried installation |
| Approvals | CE, FCC, ISED, ICASA, Telec; RoHS |
Specifications taken from the manufacturer datasheet.
Which version do I need?
-868M is the EU868 band, the correct LoRaWAN band for UK deployment. The datasheet lists CN470, IN865, RU864, EU868, US915, AU915, KR920 and AS923-1&2&3&4 as available frequencies.
Typical applications for the EM500-SMTC-868M
- Irrigation control
- Greenhouse control
- Smart agriculture
- Smart horticulture
- Golf course maintenance
- Soil salinity and fertiliser monitoring via conductivity
Buying guides for this product
Frequency band
Supplied on EU868, the LoRaWAN band used in the UK and across Europe. That is the default and you do not need to ask for it — the -868M in the part number is the EU868 build.
The same EM500-SMTC-868M unit also covers IN865 and RU864. Those bands share the 863–870 MHz radio with EU868, so one device can be set to any of them in its own configuration — no different part number needed.
CN470, US915, AU915, KR920 and AS923 are a different radio and therefore a different build. Milesight makes them and we can order them: tell us where the devices are being deployed and we will confirm the part number, price and lead time.
Not sure which band applies where? The Things Network publishes the LoRaWAN frequency plan for every country.
Complete the stack
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EM500-SMTC-868M — frequently asked questions
What does it measure and how accurately?
Soil moisture 0-100% to ±2% (0-50%) and ±3% (50-100%); soil temperature -40°C to 80°C to ±0.5°C; and electrical conductivity 0-20000 µs/cm to ±3% (0-10000 µs/cm) and ±5% (10000-20000 µs/cm).
How long is the probe cable and how is the probe installed?
The cable is 2 m. The soil sensor is designed for buried installation, has a 50 mm probe length and is rated IP68; the transceiver mounts separately on a pole, wall or DIN rail.
What battery does it use and how long does it last?
One 19000 mAh ER34615 Li-SOCl2 replaceable battery. The datasheet quotes up to 10 years at SF7 and SF10 on EU868, tested at a 10-minute reporting interval at 25°C.
Does it need a gateway?
It is compliant with standard LoRaWAN gateways and network servers in OTAA/ABP Class A. It also acts as a Milesight D2D controller, which allows it to trigger another Milesight device directly without a gateway.
Is it suitable for permanent outdoor installation?
Yes. The transceiver is IP67 and the buried soil sensor is IP68, with an operating temperature of -30°C to 70°C and 0-100% relative humidity, non-condensing.
How much does the Milesight EM500-SMTC Soil Moisture, Temperature and Electrical Conductivity Sensor cost in the UK?
The Milesight EM500-SMTC Soil Moisture, Temperature and Electrical Conductivity Sensor is £371.09 ex VAT from Indiott, a UK distributor. The price is published rather than quote-only, and we invoice with VAT (PSI Technologies Ltd, VAT GB 730 2340 83). UK delivery is a flat £14.25 per order ex VAT, whatever the weight.
What is the lead time and delivery cost for the Milesight EM500-SMTC Soil Moisture, Temperature and Electrical Conductivity Sensor?
The Milesight EM500-SMTC Soil Moisture, Temperature and Electrical Conductivity Sensor is in stock and typically dispatched within 14 working days from the UK. UK delivery is a flat £14.25 per order ex VAT, whatever the weight or how many items you order. We ship to GB and the EU and provide a VAT invoice with every order.
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