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Commercial Time Controls
  Product Range Description
  811
  841
  842
  851
  852

841



- 7 day operation
- 200 event memory
- Key protection
- Battery back-up
- Extend or crop overrides
- Volt-free contacts


The 841 is one of the models within the MK8 range of 7 day commercial and industrial controls. This range includes on/off units for boiler, lighting and process control, and pulsed output units for bellringing or siren sounding applications.

Programme entry is via a membrane keypad with audible feedback. For security it is only possible to enter or change the time, programme and extend duration with the removable key in place and turned to the setting position.

The pulsed units, 841 and 842, feature programmable duration and pulse type, continuous or intermittent. The Auto/Off/Man rocker switches allow the output to follow the programmed events, to be switched off, or to be manually on while the switch is held down in this position.
841

Technical data



Code No.TypeDescriptionDimensions
(mm)

841
087N656800 841Single channel, 7 day, electronic bell-ringer. Single channel. Up to 200 intermittent or continuous PULSED outputs per week.115 wide x 228 high x 50 deep


Documentation



Certificates/Declarations

MK8 Declaration of Conformity
Download
Literature number: VCAFI212 Release date: 02/11/2007
Filename: DRL0047 Mk8 Range 11-07.pdf Size:  0.0 Mb
Language: UK English
Instructions

841 and 842 Installation Instructions
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Literature number: VIAFT112 Release date: 01/12/2005
Filename: 3283.pdf Size:  0.0 Mb
Language: UK English
841 and 842 Installation Instructions 110V
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Literature number: VIAFU112 Release date: 01/12/2005
Filename: 3262.pdf Size:  0.1 Mb
Language: UK English
841 and 842 User Instructions
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Literature number: VIAFV112 Release date: 01/12/2005
Filename: 3282.pdf Size:  0.0 Mb
Language: UK English
Sales Leaflet

MK 8 Range
Download
Literature number: VBAFD112 Release date: 01/02/2006
Filename: 606.pdf Size:  0.3 Mb
Language: UK English
Wiring Diagrams

811 and 841 Wiring Diagram
Download
Literature number: VWAFI112 Release date: 07/02/2007
Filename: 811 841.pdf Size:  0.4 Mb
Language: UK English