Two-Channel, 365-Day Time Clock


The SL1001a is a two channel 365-day time clock. Each channel allows up to two on and two off periods per day and 12 holidays with a duration of 0- 99 days per holiday.


  • Stand-alone or network operation
  • 365-day time clock w/holiday schedule with automatic leap year and daylight savings correction
  • Vanishing holidays option – holidays are cleared from schedule when holiday period ends
  • Two independent time clock channels
  • No battery backup required
  • 32 character LCD display
  • Local and remote override capability for each channel
  • Access to programming may be locked out or limited with the use of an access code
  • Two digital inputs accept signal from photocell or occupancy sensor
  • And/or logic allows for unique control situations

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Specs & Docs



Display: 32-character LCD
Programming: Front panel keypad or EIA RS485 interface
Communications: RS485, half duplex
Memory backup: Non-volatile EEPROM, no battery required
Program setting: 4 events per day with 7 days per week and 1 holiday schedule (12 periods of up to 99 days each) for each channel
Override: Programmable from 0 to 255 minutes


Operating temperature: 32 to 131°F (0 to 55°C)
Operating humidity: 0 to 100% RH, non-condensing
Storage temperature: 14 to 140°F (-10 to 60°C)


Supply voltage: 24 VAC +/- 20%
Inputs: Two digital (dry contact)
Outputs: Two digital (SPST dry contact, 24 VAC @ 2 A) configurable
Common mode rejection: 100 db @ 60Hz
Power consumption: 5 VA max.

Specifications subject to change without notice.