The LLMS01 is built for NB-IoT networks that offer incredible range with low data usage and minimal power consumption. Its IP66 waterproof design makes it suitable for outdoor use. Its powered by a 8500mA Li/SOCl2 non-rechargeable battery and due to its low power consumption, users can expect years of operation with a moderate logging rate. The LoRa technology used for transmission allows you to send you pH data extremely long distances, and this is boosted further with the external antenna. Ranges for of more than 10km line-of-sight are not uncommon.
The LLMS01 probe is designed in a leaf shape to best simulate real leaf characteristics and consists of 15 leaf veins per centimetre, meaning it can sense smaller drops with more accuracy. It detects the leaf's moisture and temperature using the FDR method (Frequency Domain Sensors), where the leaf is used as a capacitor to measure the maximum resonant frequency in the electrical circuit, and that relates to the moisture content.
The operating parameters and many other settings on the LLMS01 can be modified via AT commands on the serial port interface through a terminal program like RealTerm, but an FT232RL USB-TTL converter is required for this task (not supplied). The communications port can also be used to upload new firmware via the built-in bootloader. When purchased with a T2U node licence, there is generally no need to worry about the technical stuff, as your device comes preconfigured for the Telemetry2U servers and loaded with the latest firmware, ready to go. Once its connected, you'll be able to send commands and change the settings on your device from the T2U interface, so there is no need to connect to via the serial port.
Telemetry2U has a live demo of a Dragino LLMS01 Leaf Moisture Sensorrunning on our IoT Platform.
| Attribute name | Attribute value |
|---|
| Features | - NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
- Monitor Leaf moisture
- Monitor Leaf temperature
- Moisture and Temperature alarm function
- Monitor Battery Level
- Uplink on periodically
- Downlink to change configure
- IP66 Waterproof Enclosure
- IP67 rate for the Sensor Probe
- Ultra-Low Power consumption
- AT Commands to change parameters
- Micro SIM card slot for NB-IoT SIM
- 8500mAh Battery for long term use
|
| Applications | - Smart farming
- Home gardens
- Research applications
- Hydroponics
|
| Package contents | - Device size: 130 x 50x 45mm
- Device weight: 150g
- Package size / pcs : 140 x 80 x 50mm
- Package weight / pcs : 180g
, - Device size: 130 x 50x 45mm
- Device weight: 150g
- Package size / pcs : 140 x 80 x 50mm
- Package weight / pcs : 180g
|
| Documents | User Manual Download Directory |
