Features:

• Recessed buttons help prevent false alarms
• Provides convenient operational control of the system (arm and disarm)
• LED confirms button presses
• Can trigger panic alarms
• Light control capability

Specifications:

• Battery: 12 VDC, 33mAh alkaline battery included
• Battery life: 5-8 years
• Operating Temperature: 10° to 120°F
• Dimensions: 1.4"W x 2.25"H x 0.38"D
• Compatibility: Simon and the Quik Bridge Keychain Touchpad

I've got a Concord 4. This is easy to install and works very nice. One thing I learned, the instructions for this remote don't state that for a Concord 4, you should learn this "sensor" as a "Group 1" device. If the remote is installed on a group that includes supervisory monitoring (see page 160 of the Concord 4 manual), then if the device doesn't transmit to the panel within 12 hours (default RF Tx timeout setting), then a "Sensor Supervisory" error message will apper on the keypad.