The Viking BTC-1 allows a user to actuate a door strike or door controller by touching an icon on their Bluetooth enabled smartphone, tablet or notebook. The BTC-1 can be preprogrammed with the type of contact needed, NO or NC, and the duration of the contact from 0.5 to 120 seconds. Continuous on is also supported (see current limits below). Security is maintained by way of encrypted communication as well as a programmable Security key. The unit name is also user changeable to allow the use of multiple BTC-1 s. All programming can be done through the free Android application available on Google s Play Store (Windows application coming soon). The unit has an LED status indicator that shows if the unit is paired with a device, in programming, or idle. The BTC-1 is small enough to fit on a door frame and it can be powered from the door strike power supply.