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  • AT4B, Altronix Annual Event Timer Board AT4B, Altronix Annual Event Timer Board

Altronix AT4B 4Ch Annual Event Timer Board (365 day / 24 hr.)

Altronix | SKU: AT4B | Model: AT4B

Product Highlights

Altronix AT4B 4Ch Annual Event Timer Board (365 day / 24 hr.)
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AT4B is an extremely versatile 24 Hour 365 Day Event Timers designed to support a wide range of applications. Such applications include: Home and Building Automation, Security, Access Control, Lighting Control, Etc.


  • 12 to 24 volts AC or DC operation.


  • Standby current: 20mA with relays off combined with 40mA for each relay on.
  • Four (4) Form "C" relay contacts are rated 10 amp @ 120VAC/28VDC.
  • Each relay operates independently.


  • Momentary and/or Latching Events.
  • 254 individually programmed daily/weekly events.
  • Block programming capacity can accommodate a total of 1778 events per week.
  • 254 programmable Holiday events.


  • EE Prom memory protects against loss of programming due to power failure.
  • Clock synchronization 60Hz (AC operation).
  • Accurate crystal controlled clock (DC operation).
  • "First man in" option.
  • Standard or Daylight Savings Time settings.
  • Automatic compensation for leap year.

Battery Backup

  • Built-in charger for 12VDC sealed lead acid or gel type batteries (Max. charge current 300mA).


  • Alphanumeric LCD display simplifies programming.


  • Operating temperature: -20C to 49C ambient.

Additional Information

Product SKU AT4B
Brand Altronix
Condition New
Number of Channels 4
Relay Rating 10 amp
Calender Yes
Operating Voltage 12 to 24 volts AC or DC
  • (1) Event Timer Board
  • Lifetime Warranty