AV:Link: 170.190UK, Active Subwoofer Cabinet, 20cm Driver, 200W Output, Adjustable Gain and Crossover Default:- Pairing with Hikvision displays is

Pairing with Hikvision displays is automatic

the Ei3030 offers peace of mind with a 10-year guarantee

Robust Build: IP67 water and dust resistance

Photo verification: Photos on alarm

Tri‑X two‑way wireless (868 MHz) with AES‑128 and frequency hopping

AV:Link: 170.190UK, Active Subwoofer Cabinet, 20cm Driver, 200W Output, Adjustable Gain and Crossover Default:- Pairing with Hikvision displays isActive Subwoofer Cabinet Active sub cabinet with 8" (20cm) reinforced driver and internal amplifier with active filter circuit. Inputs are on twin RCA or from a stereo amplifier on spring terminals (between amp and mid top speakers). Cutoff frequency and Gain rotary controls can be adjusted as required. "Auto Off" function deactivates the amplifier when no incoming signal is detected to conserve energy. Integral amplifier with variable crossover Auto