NITEK passieve tweedraads zender/ontvanger video/spanning BNC RJ-45 - BNC

Transmit full-motion colour video up to 400 metres and monochrome up to 600 metres over standard Cat5e/6 cable with this passive balun pair. No external power required — just plug in and extend your CCTV signal with zero configuration.

Overview

The NITEK VB31-PT is a passive video and power balun kit that converts a 75-ohm BNC coaxial signal to 100-ohm balanced twisted pair and back again. It supports all standard analogue formats (NTSC, PAL, SECAM) as well as HD analogue signals including AHD, HD-CVI and HD-TVI up to 1080p. The transmitter and receiver pair are compact, ABS-housed units with a BNC male connector on one end and an RJ-45 female jack on the other, making them ideal for retrofit installations where coaxial cable is impractical or too costly.

What stands out

• Passive operation — no power supply needed, reducing points of failure and installation cost.
• Extended range: colour video up to 400 m, monochrome up to 600 m, and HD 1080p up to 200 m over Cat5e/6.
• Built-in surge and ESD protection safeguards connected equipment from electrical transients.
• Supports both legacy analogue and modern HD analogue cameras, future-proofing your system.
• Compact and lightweight design with ABS housing for easy mounting in tight spaces.

Technical details

• Signal type: 1-channel video + 1-channel power (voltage)
• Video connector: BNC male; UTP connector: RJ-45 female
• Video impedance: 75 ohm; UTP impedance: 100 ohm
• Supported video formats: NTSC, PAL, SECAM, AHD, HD-CVI, HD-TVI (up to 1080p/2MP)
• Max transmission distance: 400 m colour, 600 m monochrome, 200 m HD 1080p (Cat5e/6)
• Protection: surge and ESD
• Housing material: ABS plastic
• Operating temperature: -10°C to 50°C
• Humidity: 0-95% non-condensing
• Application: CCTV security systems, analogue HD cameras

Our verdict

For installers and integrators, the NITEK VB31-PT is a no-brainer: it eliminates the need for expensive coax runs, works with virtually any analogue or HD camera, and its passive design means one less thing to troubleshoot. The built-in surge protection is a welcome bonus for outdoor or industrial environments.