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The Makey Makey Classic uses high-resistance switching to detect when you've made a connection even through materials that aren't very conductive (like leaves
This integrated LED lamp design of light emitting diodes provides a more reliable
Disconnect Type: External Front Operating Handle
 This emergency exit marking fixture is explosion proof and carries an integral battery backup power supply
allowing operators to run each light individually or in tandem if desired
Ammonia Gas Sensor - MQ-137 Larson Products Home Page The Makey Makey Classic usesThe MQ 137 is an Ammonia (NH) gas sensor from Winsen. The sensing element is SnO2, which has lower conductivity in clean air. When NH (Ammonia) gas exists, the sensors conductivity gets higher along with the gas concentration rising. A simple circuit makes measuring this change in conductivity and turning it into data fairly straight forward, but does require some calibration. For easy Solderability; use our [Gas Sensor Breakout Board](https: www.
US$ 34.95
US$ 31.00
US$ 27.00