Features: High accuracy and wide measuring range. Stable performance, supports long time use. With large and clear display for better readability. Has refrigeration mode, defrosting mode, upper & lower limit setting. Suitable for commercial refrigerators, all kinds of freezers, cold storage, etc. Specifications: Material: ABS Voltage: 12V, 24V, 110~220V(Optional) Sensor wire length: 1m Temperature measuring range: -50~99 Temperature controlling range: -40~50 Resolution: 1 Measuring accuracy: 1 at -40~50, 2 outside -40~50 Environment temperature: 0~60 Environment humidity: 20~85% (No Condensation) Storage temperature: -30~75 Item size: 85 * 75 * 34.5mm / 3.35 * 2.95 * 1.36in Package size: 100 * 85 * 50mm / 3.94 * 3.35 * 1.97in Package weight: 150g / 5.29ounces (12V/24V) 158g / 5.57ounces (220V) Note: 1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2.Please allow a little measuring deviation due to manual measurement. Package List: 1 * Temperature Controller 1 * Sensor-Wire