Applicable Equipment: Waterproof temperature sensor can be used for SONOFF TH Elite/TH Origin to detect and measure temperature Wider Measuring Range: Measuring range from -40C to +115C, enabling a wider range of use. Easy to install. Waterproof & Super Durable: Stainless steel probe is waterproof, corrosion-resistant, and rust-proof, and can be used in a humid environment Enough Cable Length: The 150cm cable allows you to connect devices that are far away from the switch Easy to Use: Simply plug in the TH Elite/TH Origin Specifications: Model: WTS01 Connector type: RJ9 (4P4C) Working temperature: -40~+115 Cable length: 1.5m Product size: 50x6x6mm Accuracy over the range: -10 to 85 Package included: 1 x Temperature Sensor 1 x English and Chinese Manual Other items not included