TU-8A (Danfoss 841 and 842 Replacement) 8 Channel Digital Timer Unit

£247.00 ex VAT.

RRP: £311.00 ex VAT.21% discount, that's a saving of £64.00!


The TU-8A is a Clever Little Box 8-channel Digital Timer Unit and can be used as a replacement for the Danfoss 841 and Danfoss 842 timer units or the Randall 841 or Randall 842, as they were originally branded.

The TU-8A features a sleek design; ideal for Education, Industry & Retail applications where the scheduled broadcast of tones, messages, alarms or recorded audio files/tracks is required on an ongoing, repetitious basis.

This Timer Unit has been designed to provide programmed weekly event switching of 8 independent relay outputs. So this easily matches the Danfoss 841 and 842 channel capacity. You may need to check requirements for the pulsed output that the Danfoss Timer range could do as the TU-8A can do this, but it is not a simple as it was with the 841 and 842.

Often used for:

  • Tea Break Tones
  • End of Shift Tones
  • Start of Shift Tones
  • Boiler Blow Down Applications
  • Door Entry Trades Button Timer
  • Class Change in schools, colleges, and universities
  • Loudspeaker Control, particularly for external loudspeakers
  • Break Time Systems in Factories, Warehouses and other commercial or industrial applications

*If you’re looking for more break time sounder options, why not visit our sister company: North East Time Recorders Limited, who have a full range of Break Timers and Sounders available for you.*

This Digital Timer Unit provides NO (Normal Open) or NC (Normal Closed) relay contacts to each of its 8 Relay Outputs with 10A capability at UK mains voltages or up to 24v DC applications.

Product Features:

  • Clear blue LCD display screen
  • Event manual override facility
  • 7-day week event Switching Timer
  • Easy access Phoenix Connectors per Relay output and Power connectivity
  • Onboard memory maintains time & program settings – approx. 7 days in event of power loss



Number of Output Channels


Events per Day

64 (32 on/off)


7-day week

Relay Rating

12A @ 120V AC
10A @ 240V AC, or 24V DC

Case Material

Powder-coated steel


12V DC (Mains Plugtop PSU supplied)

Power-out Memory

Up to 7 days memory storage of Time/Program settings


140 mm W x 110 mm H x 25 mm D

Shipping Weight

0.90 kg

Net Weight

0.52 kg

Accessories (Included)


Accessories (Optional)


To view the TU-8A’s partnered product, click here.

Data Sheets

Data Sheet

Additional information


Clever Little Box


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