Platinum thermal resistance is a type of precise, sensitive, and stable temperature sensor. The temperature measuring element can be quite small, allowing for the creation of all kinds of micro temperature sensor probes. Features: PT100 platinum resistors waterproof temperature sensors. High measurement accuracy, stable performance. External insulated shielding and internal fiberglass insulation. Wide temperature range from -20 to 250 degrees Celsius. Small structure, wide application range, good reliability, and short thermal response time. Specifications: Type: Platinum thermal resistance waterproof Temperature Range: -20~250℃ Sensor Size: 4 x 30mm / 0.15 x 0.18" Cable Length: Approx. 50cm / 19.68" External Shielding: Insulated shielding Internal Insulation: Fiberglass Quantity: 10pcs Weight: 37g(approx) Package includes: 10pcs x Sensor Probes Note: 1. Please allow 1-3mm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated the same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.