Intercom System Diagrams 2 entrance (R09 SWITCHER) wiring, with 801 handsets. 2 entrance (R09 SWITCHER) with TRADES button, with 801 handsets. VIDEX 4000 with TRADE . ACET. Acet 2 wire intercom diagram. Amplyvox. Engineers Area (Staff Only) Auta. Engineers Area (Staff Only) ACT. ACT5 Keypad instructions. ACT 10 Keypad Instructions. Bell System (BSTL) Audio System with ACT5E prox keypad - Access control Keypad ACT5E Black Surface Mounted External Use. The ACT 5E keypad is a simple to use and easy to install standalone access control product. Keypad backlighting enhances functionality at night or in poor light conditions. The ACT 5E digital keypad is contained in a stylish polycarbonate housing, with stainless steel keys and potted electronics,..