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Come with screw mounting hole. Power indicator LED. On board comparator for digital output. DO will be low when humidity reaches certain level, by adjusting on board potentiometer, the level can be adjusted. Humidity is higher than the threshold, DO will be LOW. Turning the on board potentiometer clockwise set the humidity level lower. AO will output analog voltage. Operating Humidity range: 20-95%RH Operating Temperature: 0 -60 degree Celsius Accuracy: +-5%RH Onboard pull up with 10K resistor to VCC. High humidity results in lower voltage at A0

A cable tie (also known as a hose tie, zap strap or zip tie, and by the brand names Ty-Rap and Panduit strap) is a type of fastener, for holding items together, primarily electric cables or wires. Because of their low cost and ease of use, cable ties are ubiquitous, finding use in a wide range of other applications. Stainless steel versions, either naked or coated with a rugged plastic, cater for exterior applications and hazardous environments.[1]   The common cable tie, normally made of nylon, has a flexible tape section with teeth that engage with a pawl in the head to form a ratchet so that as the free end of the tape section is pulled the cable tie tightens and does not come undone. Some ties include a tab that can be depressed to release the ratchet so that the tie can be loosened or removed, and possibly reused.

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current, typically resulting from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation. Circuit breakers are made in varying sizes, from small devices that protect low-current circuits or individual household appliance, up to large switchgear designed to protect high voltage circuits feeding an entire city. The generic function of a circuit breaker, RCD or a fuse, as an automatic means of removing power from a faulty system is often abbreviated to ADS (Automatic Disconnection of Supply).