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TEC1 12706 40x40mm Thermoelectric Cooler 6A Peltier ModuleFeatures-Small module.Operable up to 138°C.Easy transition between the hot side to the cool side and vice-versa just by reversing the polarity of the supply.Quality tested cooling cells.Solid-state, vibration-free, noise-free.Simple to i..

SN04-N NPN NO 5mm Distance Detector Proximity Sensor Switch ModuleFeatures-Red LED checks the state of the proximity sensorHigh repeated positioning accuracyHigh switching frequencyWide voltage rangeAntivibration, dust, water, and oil preventionReverse power protection, short circuit protection, dir..