Grove - Dry-Reed Relay ---------------------- ![enter image description here][1] The Grove-Dry-Reed Relay is a relay module which works through magnetizing the vibration reed via the current in the coils. Compared to electromagnetic relays, the contacts completely sealed is the biggest feature of the Dry-Reed Relay. Besides, it features simplicity in construct, compactness, fast speed and long life, which make it widely applied in many fields such as microelectronic detection, Automatic Control etc. Features Grove Interface Compact Switch faster High sensitivity Good stability Long contact life Contact fully sealed For more detail, please visit: http://www.seeedstudio.com/item_detail.html?p_id=1412 [1]: http://www.seeedstudio.com/depot/bmz_cache/1/16a562af66ac52d6e0e19a7b6ec5588d.image.530x397.jpg