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Small beige rectangular box with screw terminals and power LED

Viking Electronics

Viking Electronics VK-TBB-1B Talk Battery Booster 40V DC 26mA

SKU CH-CYAA-9ECYP

Boosts talk battery to 40 V DC and 26 mA for line-powered devices such as hands-free phones and door boxes while passing ringing, caller ID and hook-flash signals

  • Boosts talk battery to 40V DC for reliable line-powered device operation
  • Delivers up to 26mA loop current to support handsfree phones and dialers
  • Extends maximum loop length on analog PABX and KSU station ports
  • Passes ringing, caller ID, hook flash and CPC signals transparently
  • Compact 76mm x 112mm x 36mm enclosure with UL-listed 120VAC adapter included

Talk Battery Booster for Line-Powered Devices

The Viking Electronics VK-TBB-1B provides a 40V DC talk battery and up to 26mA loop current to line-powered equipment. It supports handsfree phones, touch-tone hot-line diallers and digital announcers. The unit extends the maximum loop length on analog PABX or KSU stations and works with wireless doorbox devices. It is not compatible with pulse or rotary dialling systems.

Sustained Loop Current and Voltage Delivery

Under continuous operation the booster maintains a nominal 26mA loop current and 40V DC talk battery to the connected device. It passes original ringing, caller ID data, hook-switch flash and CPC signals without interruption. The 120V AC to 12V DC 500mA UL-listed adapter supplies steady power for extended use. Performance stays consistent within the specified environmental range.

Thermal Range and Power Consumption

The device operates reliably from 0°C to 32°C with 5% to 95% non-condensing humidity. Its compact 76mm by 112mm by 36mm enclosure dissipates heat passively with no moving parts. Power draw is limited to the included 12V DC 500mA adapter, keeping energy use low during normal operation. The power LED indicates both supply status and line activity.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $70.99
Pricier than about 66% of the 3,838 comparable items (median $41.99).

Specifications

No published specifications for this item yet.

Questions about this item

How much heat or power draw should I expect when the VK-TBB-1B runs continuously?

The unit draws 500 mA at 12 V DC from the included UL-listed adapter, so continuous power consumption is about 6 watts with minimal heat in the 0 °C to 32 °C operating range.

What must I already have on site for the VK-TBB-1B to function?

You need a 120 V AC outlet for the supplied 12 V DC 500 mA adapter and an analog line-powered device such as a hands-free phone, touch-tone hot-line dialer or digital announcer to connect to the four screw terminals.

Will the VK-TBB-1B work with the rotary-dial equipment I still use?

No, the booster is not compatible with pulse or rotary dialing; it only supports touch-tone dialing while passing ringing, caller ID, hook-switch flash and CPC signals through to the connected device.

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