Shiv Ref-Air India LLP

A sub-zero temperature sensor, or subzero temperature controller, is a device designed to measure and control temperatures below freezing, often as low as -80°C, used in applications requiring precise cold environment management like scientific labs, freezers, and industrial processes. 

A "BSP Thread Sensor" refers to a sensor, typically a level sensor, that uses a British Standard Pipe (BSP) thread for connection. BSP threads are a standard used for joining pipes and fittings, and in this context, they provide a standardized connection for the sensor to be installed and sealed in a system, often a tank or pipe.                                                                                                                                                                                                                                                                                                                                                                                                             .