<p>Platinum thermal resistance is a kind of accurate, sensitive and stable temperature sensor. The temperature sensing element can be quite small so it can be made into all kinds of micro temperature sensor probe. Features: PT100 platinum resister waterproof temperature sensor temp probes. High measuring accuracy, stable performance. External insulated shielding and internal fiberglass insulation. Wide temperature range from -20 to 250. Small structure, wide use, 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&quot; Cable Length: About 50cm / 19.68&quot; 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. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1PT100 platinum resister waterproof temperature sensor temp probes 2High measuring accuracy, stable performance 3External insulated shielding and internal fiberglass insulation 4Wide temperature range from -20 to 250 5Small structure, wide use, good reliability and short thermal response time </p>