Electronic siren base for 2-piece outdoor with strobe flash from Xenon. Electronics protected by a high resistance blue colored polycarbonate inner shell (BS4737). Acoustic power of 118 dB at 1 m. 6 Vdc / 280 mAh NiMH battery. Anti-sabotage of lid and wall. Green and red LEDs flashing or fixed, for indication of the status of tamper, battery and presence of maintenance voltage. Security alarm timing of 3 or 15 minutes. Supervision of siren and flash cables. 2 working modes SAB and SCB. Easy configuration of all functions through bridges. Compatible with Multibox series caps. Sleep consumption: 50 mA. Total consumption: 400 mA. Certified EN50131 Grade 3. Dimensions base: 175 x 140 x 65 mm.