Factory set clock and date.
7 Day 2 Channel Programmer - Replaces Honeywell ST9400C
Honeywell ST9400C 7-Day Electronic Programmer 2-Channel 3 On/Off
Honeywell ST9400C 7 Day, 2-Channel, 3 On/Off per Day
Honeywell ST9400C 7-Day Electronic Programmer with 2-Channel
Honeywell ST9400C 7-Day Electronic Programmer 2-Channel 3 On/Off Digital Heating