DSC WS4939-ADT - Dsc Wireless Keyfob 4 Buttons The WS4939 is the choice in remotes if you want to be able to control both arming states of your DSC alarm panel with wireless capability. The remote features four-buttons: Arm away, Arm Stay, Disarm, and a Panic Button. This remote will give you full control of making sure that no matter whether you're at home or going away; your system is armed and armed without having to go to the keypad every time! Replacement battery is a CR2025 Specifications Dimensions . . . . . . . . . . . . . . . . . . . . . . 2 1/2" x 1 1/4 x 7/16" (57 mm x 32 mm x13 mm) Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 oz (15 g) Operating Environment . . . . . . . . . . . 32 to 120 F (0? to 49? C) Relative Humidity . . . . . . . . . . . . . . . . . 5% to 93% 20% RESTOCKING FEES AND SHIPPING WILL BE CHARGED. IF ITEM IS FUNTIONAL OR INCOMPLETE. Your feedback is extremely important to us! If you are satisfied with our service please take the time to give us positive feedback. We tremendously appreciate it! We strive for your complete satisfaction. Likewise, if you have any issues, please contact us first, and we promise we will do our best to satisfy your needs and solve the problem. If we resolve your problem, we kindly ask you to still leave us positive feedback. Your kindness will be extremely appreciated!