Video Amplifiers are offered in 1- and 4-channel models.
Press Release Summary:

ENFORCER VA-2000 Series Video Amplifiers are available as VA-2101B0-WQ 1-channel and VA-2404B-WQ 4-channel systems, which amplify video signals for transmission distances of up to 3,300 ft. Both include power-pass through circuit, allowing excess current/voltage not used by 12 Vdc power adapter to be used to power other 12 Vdc devices. Independent brightness and sharpness adjustments for each channel help fine-tune signal. Units are compatible with color and b&w signals.
Original Press Release:
SECO-LARM Introduces the VA-2000 Series of Video Amplifiers
IRVINE, CALIF., March 30, 2009 - SECO-LARM is now shipping the New ENFORCER VA-2000 Series of Video Amplifiers. The VA-2000 Series is available two models, the VA-2101B0-WQ One-Channel Video Amplifier, and the VA-2404B-WQ Four-Channel Video Amplifier. The VA-2000 Series amplifies video signals for transmission distances of up to 3300 ft (1000m).
The VA-2101B-WQ and VA-2404B-WQ Video Amplifiers both feature a unique power-pass through circuit. Excess current and voltage not used by the included 12VDC power adapter can be used to power other nearby 12VDC devices with low current-consumption.
Both models of video amplifier feature independent brightness and sharpness adjustments for each channel to fine-tune the signal for outstanding picture quality. The amplifiers are compatible with both color and black & white signals, and are installed at the monitor or DVR side of a cable run.
For more information about this product or any of SECO-LARM's full line of residential and commercial security systems and accessories, or to request our latest catalog, please contact the SECO-LARM Sales Department (949) 261-2999 (California) or (800) 662-0800, fax (949) 261-7326, or visit us on the Web at www.seco-larm.com.
SECO-LARM© USA INC.
16842 Millikan Avenue
Irvine, CA 92606
Phone: 949-261-2999
Fax: 949-261-7326
Email: sales@seco-larm.com
Website: www.seco-larm.com