8 Best Temperature Tracking Sensor Brands for Farms

Malaysian farming has two distinct temperature-tracking jobs. Field microclimate logging for crop research, and shed or warehouse monitoring for livestock and post-harvest storage. Cameron Highlands vegetable farms log night-time lows, palm oil estates in Sabah track soil temperature at 20–60 cm depth, and broiler operators in Perak watch for heat stress events above 32°C. The eight brands below differ in radio frequency, power source, and alert behaviour, so the right pick depends on whether you need real-time alarms, offline logging, or API access into a private dashboard.

1. Milesight EM500-SHT

LoRaWAN environmental sensor with an external probe on a 2-meter cable, rated for -40°C to 125°C with ±0.3°C accuracy. IP67 enclosure, two AA batteries, roughly six years of life at one report per 10 minutes. Pairs with the Milesight UG65 gateway or any standard LoRaWAN gateway, and feeds into Milesight IoT Cloud, ChirpStack, or AWS IoT Core via HTTP/API. In Malaysia, this node is common in Johor poultry houses and fertigation tanks on chilli farms.

2. Dragino LHT65

LoRaWAN temperature and humidity node with a built-in sensor, or an external probe variant (LHT65N) for soil work. Range is -40°C to 80°C. Two AA batteries deliver up to five years with hourly transmission, and the unit has a physical wake button for rapid commissioning. Dragino publishes full AT commands and Arduino sketches, which is why Malaysian university LoRa pilots and The Things Network deployments in Selangor use it heavily. The cheapest reliable node if your farm plot already has LoRaWAN coverage.

3. Onset HOBO MX2303

Bluetooth Low Energy data logger with two external probes for temperature and humidity. No gateway required — you walk within 30 meters, open the HOBOmobile app on a phone, and download the dataset. Rated -40°C to 70°C, with 16 MB memory for about one million measurements. This is the standard in Malaysian research agencies like MARDI and FELDA research stations for seasonal crop trials. It is not real-time; you must physically retrieve the data, so it suits trials and audits rather than alarm-based operations.

4. Metos iMETOS IMT280

Pessl Instruments weather station measuring air temperature, leaf wetness, and soil temperature at 10, 20, 30, and 60 cm depths. Solar-powered with GPRS, NB-IoT, or LoRaWAN uplink. Data lands in the FieldClimate platform, which runs disease prediction models for durian anthracnose and banana sigatoka. Oil palm research plots in Sabah and Johor log these stations at estate level. FieldClimate exposes an API so managers can pull hourly readings into their own estate dashboards.

5. Monnit MNS2-9-W2-TS-TL

Wireless temperature sensor available in 433 MHz or 900 MHz bands. Range up to 300 m line-of-sight to a Monnit gateway. The iMonnit cloud platform handles thresholds, SMS and email alerts, and scheduled reports. In Malaysia, these nodes run inside mushroom cultivation rooms in Selangor and aquaponics greenhouses, where the moderate plastic enclosure is protected from direct rain. Note that the 900 MHz band is not an open ISM band under MCMC regulations, so integrators either use the 433 MHz version or apply for a spectrum permit.

6. Sensaphone 1400

A remote monitoring base station, not a wireless node network. Four sensor inputs accept 10k thermistor probes, dry contacts, and 4-20 mA transmitters. Communication options are landline, Ethernet, or cellular. The unit dials out sequentially to four phone numbers until someone acknowledges the alarm. In Malaysian broiler sheds, a Sensaphone sits inside the office and tracks air temperature through a thermistor probe run into the ventilation duct path, while also monitoring power loss and feed silo level switches.

7. Davis Vantage Pro2

A full weather station whose temperature sensor is the core feature. The external temperature and humidity sensor sits inside a fan-aspirated radiation shield, which holds the measurement error to ±0.4°C instead of the ±2°C typical of non-aspirated units. Wireless range to the console is 300 m, and a WeatherLink Live adapter pushes data to the cloud over Wi-Fi. Malaysian seed production companies use the Vantage Pro2 at single field sites to reject daytime extremes during pollination windows. Price is higher than a data logger, but you also get wind, rain, and solar radiation data from the same unit.

8. Seeed SenseCAP S2101

LoRaWAN air temperature and humidity sensor from Seeed Studio, available with battery or solar power and rated IP66. Accuracy is ±0.3°C. The unit is open-source compatible with the SenseCAP Mate app, ChirpStack, and AWS IoT Core, and Seeed’s Singapore office maintains an active reseller network across Johor and Selangor. The pre-paired gateway options and extensive community documentation make the S2101 a practical choice for pilot plots where nodes must be swapped quickly without re-provisioning.