Technology partner: V474 Altronix Corporation
SKU AT4B-474
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 10A @ 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.
  • Built-in charger for 12VDC sealed lead acid or gel type batteries (Max. charge current 300mA).
  • Lithium battery backup maintains clock.
  • Order Altronix part # LB2032.
  • Alphanumeric LCD display simplifies programming.
  • Relative Humidity 85% +/- 5%.