Ness RK4 & Receiver Wireless Kit k-6009The NESS RK4 Radio Key & Radio Interface Kit provides wireless Arming, Disarming and Aux functions for Ness DPlus and D8x D16x control panels. In addition, the receiver provides the interface for optional wireless detection devices. 4 wire data connection to the control panel. Includes 1 x 100 200 Ness radio Interface, 2 x 106 167 Ness RK4B Radio Keys. Compatible with Ness DPlus D8x D16x control panels Rev 4. 0 and later. On D8x D16x Rev3. x and