Ceiling suspension of single and double sided units is available. The 400A range are supplied in rectangular cases suitable for surface mounting on a wall, flush mounting in a panel or with a mounting box for installation in a solid wall. Additionally, the 401A, 420A and 490A series clocks may be used as stopwatches or elapsed time counters when controlled by a type 496A external switch unit. Low voltage operation is available as an extra cost option.Īll may be used either as stand-alone units, operating from their internal high stability quartz crystal oscillator or as slave clocks controlled by one of a variety of signal sources. 400A series clocks are normally powered from a mains supply, an automatically recharging internal battery provides a standby supply to maintain the time keeping in the event of an interruption in the mains power supply. The 400A series of clocks, calendar clocks and world time-zone display systems provide a precise and elegant display of time, or time and date, using bright and clear red or green LED characters with both manual and automatic brightness control. Clock displays operate as slaves or in stand-alone mode. Categories By brand New products Audio and data connectors Video and RF connectors Power connectors, distribution and batteries Connection panels and stageboxes Fibre optic cables, connectors and interfaces Cable assemblies, patchcords and leads Cables Cabling accessories and tools Bags and cases Racks and enclosures Rack accessories and hardware Lights, clocks, furniture, fittings and equipment supports Drives, memory, media, labelling and sound effects Microphones Radio Microphones Microphone supports, amplifiers, powering and accessories Headphones, headsets, earpieces, amplifiers and wireless systems Hearing protection and noise control Record, replay and radio receivers Audio interfacing Video interfacing, processing, monitoring and camera accessories Audio mixers and processing Amplification Loudspeakers and audio monitoring Test and measurement Communications, conferencing and datacoms Assistive Listening Index By brand Index New products Special offers Clearance listĪ master/slave clock system manufactured in the UK by Wharton Electronics, using its own time code system to drive the slaves, a code capable of being sent long distances over standard unscreened two-core wiring.
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