What is Sensus?
Sensus is a ultra-lowpower, Homeassistant-compatible environment and plant sensor. It started as a plant health monitoring sensor but ended up being a more general-purpose environment sensor with optional addons, one of which is the Plant Health Monitoring Addon.
- Measures Temperature🌡️, Relative Humidity 💧, Illuminance ⛅ and Battery Voltage 🔋
- 🌱 Additional Plant Addon also adds Soil Temperature and Soil Moisture
- Homeassistant compatible out of the box, thanks to the BTHome data format 1
- Transmits data via Bluetooth Low Energy and USB 🔌
- Compatible with BLE4.0+ adapters
- 100m of range when transmitting data via Bluetooth 📶
- Powered either via USB-C or a CR2032 battery
- Ultra-low power consumption, ~1 year battery life when powered from a high-quality CR2032 battery 2 ⌛
- RGB status LED 🚦
- sensus-cli command line interface that can be used to:
- Log real-time data via USB and save to a CSV file
- Log real-time data via Bluetooth and save to a CSV file not yet implemented
- Configure parameters such as time between measurements, Bluetooth name, LED behavior
- Power-safe firmware updates via USB and BLE 3
- Read device information such as firmware version and MAC address/serial number
- Optional magnetic 3D printed case with plexiglass window available
Specifications - Sensus
All accuracy related specifications assume the device is functioning within the recommended operating temperature range of -10°C - 45°C (14°F - 114°F)
Temperature and RH sensor
Specifications - Soil Probe
Probe soil moisture sensor
Probe temperature sensor
Commonly asked questions
Is the device waterproof?
The soil probe is waterproof, however the main control unit (the rectangular PCB) is not due to the limitations of a 3D printed case. I recommend to exercise caution with the main unit and avoid anything more than light splashes, even though it might be fine.
I did test the Sensus in outside conditions for long periods of time and with occasional water spraying on the main unit and it still appears to function, however I can't recommend you do the same. You can, but it's on your own risk.