Everfocus Multiplexers 
Everfocus EP4BDX 4 Camera B/W Multiplexer - EverPlex EP4BDX

The EverPlex4BDX is an extremely flexible and user-friendly processor that allows the most cost effective operation in multiple monitoring surveillance. The 4BDX features simultaneous display and playback, which enhances the power of video multiplexing for your security system. Features: Full capability duplex multiplexer allows recording and playback of video simultaneously via 2 VCRs. Spot monitoring, live quad monitoring, and single sequence monitoring are available Selectable time-lapse recording mode High-speed of 0.067 seconds to record 4 frames in full screen Adjustable Gain control for each channel and VCR input

Specifications: Model No. EP4BDX Video format: EIA , Video input: 4 camera inputs, 1Vp-p/75ohm, with loop through; 1 VCR input, 1 Vp-p/75ohm , Video output: 4 video outputs, 1 Vp-p/75ohm , Monitor output: 2 monitor outputs: Main monitor and call monitor , Recording output: Multiplexed video output (1 Vp-p/75 ohm), Refresh rate: 60 fields/sec. 50 fields/sec. Video freeze: Yes Time-lapse record: Selectable time-lapse recording mode , Video loss detection: Yes , Alarm input: 4 alarm inputs and 1 alarm reset input , Alarm output: 1 normally open, 1 normally closed relay input , Buzzer: Yes , Title: 8 character generator for each camera input , Timer Built-in real time clock , Setup: On screen setup , Switching: Programmable auto sequential switch and adjustable dwelling time (1-99 sec) , Key lock: Yes , Remote control: D-Sub 9 pin/ RS232 , Power source: AC90 ~ 260V, 50/60 Hz , Power consumption: 17W max. , Dimensions: 438 x 262 x 44 mm , Weight: 4.5 Kg. , Operating temperature: 0oC to +40oC