Reed Switch Sensor Module for Arduino (Works with Official Arduino Boards)
Color: Blue - Material: PCB - Open reed switch - Comparator output clean signal great waveform and strong driving ability - More than 15mA - Working voltage: 3.3V~12V - Output format: digit switch output (0 and 1) - Fixed bolt hole for easy installation - Using a wide voltage LM393 comparator - Applies to PBX photocopiers washing machines refrigerators cameras disinfection cabinets doors window magnetics electromagnetic relays electronic weighing level meters gas meters water meters etc.