Feature 1[Waterproof Shell] The shell is waterproof, can be used outdoors, can convert any standard 485 signal into a radio signal transmission. 2[Two Channel Simultaneous Communication] Support two channel simultaneous communication, two different communication rates can be set to ensure short distance high speed communication, and longdistance reliable communication. 3[Real Time Monitoring] Can monitor its own power, signal and real time data in real time, and upload it through wireless communication. 4[Unique Encryption Technology] Adopt unique encryption technology to ensure that it is not monitored, to ensure reliable control. 5[Communication Distance] The communication distance of the collector can arrive 3000 meters line of sight, so you can use it with confidence.Item Type: Soil Sensor TransmitterMaterial: ABSProduct Size: Approx. 11.5 x 10 x 4 cm / 4.5 x 3.9 x 1.6 inOutput RS485 Power Supply: 10-30VDCCable Length: Approx. 2m / 6.6ftBattery: DC 3.6V 19000mah lithium battery (Battery Included)Working Temperature of Collector Circuit: -20~+60Collector Output Signal: Wireless signalCollector Transmission Distance: Indoor downtown area, 3-4 layers of concrete wall can be wornOutdoor Viewing Distance: 3000 metersCollector Protection Level: IP65Sensor Working Temperature: -40~+60Temperature Resistance of The Core Chip of The Sensor: 85Sensor Soil Moisture Parameter Range: 0-100%Resolution: 0.1%Accuracy: 2% 0-50%, 3% 50-100% (umber, 60%, 25)Sensor Soil Temperature Parameter Range: -40~80Resolution: 0.1Accuracy: 0.5C (25C)Weight: Approx. 445g / 15.7oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Soil Sensor Transmitter1 x Matching Battery1 x Antenna4 x Accessories1 x ManualNote1. All steel needles must be inserted into the soil during measurement.2. Avoid strong sunlight directly shining on the sensor, resulting in excessively high temperature. Pay attention to lightnings protection when using on site.3. Don't bend the steel needle forcefully, pull the lead of the sensor forcefully, and don't violently hit or hit the sensor.4. The sensor protection level is IP65, and the entire sensor can be immersed in water (the collector cannot be directly immersed in water).5. The sensor and the soil collector are connected by a pair of plug in wires. When plugging and unplugging, please use the correct plugging and unplugging methods.