Edwards EST SIGA-DTS Duct Test StationThe SIGA DTS Duct Test Station uses a key switch along with an integral intelligent input module mounted on a two gang plastic plate. It is supplied with two keys and features a red alarm LED. When the key is turned to the TEST position, the LED lights and the integral module remotely inputs a duct detector test alarm. The Duct Test Station mounts to standard 2 inch deep North American two gang and 4 inch square electrical boxes and European 100 mm