Note: This product replaces the Somfy Clavier Digicode RTS device (1841030). It is also known by the reference number 1870917. Note #2: An Allen key is not included. A TX10 model key is required. The same goes for the screws located on the rear side. The SOMFY Keypad 2 RTS (Ref: 1870917) is available on Allo Remote Control. It is an element of choice for the protection of your home which has a 3V battery (CR 2450) and a frequency of 433.42 MHz.