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Intermatic HB800 Series - User Manual

Intermatic HB800 Series
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1
Day Of Week (DOW) Display events can be programmed for
just one day of the week, all the days of the week, just weekdays
or just weekends
Event Display the timer can be programmed for up to 28 total
ON/OFF events per week
Mode Display the timer can display several modes during
setup and programming and three modes during operation:
MANual, AUTO and RANDom. MANual allows for manual operation
of the plugged-in devices, AUTO uses the timers exact settings
and RANDom uses the timer’s settings varied by random 5-minute
increments of ±30 minutes.
Output Status Indicator this is the ON/OFF indicator. When the
green light is on it means that the lamp or appliance should be
on. If it is not on, the bulb may be burned out or the device may
be turned off at the lamp or appliance.
NOTE: You may set up and program the timer before you plug it
in. Be aware that while it is unplugged, the display will turn off to
conserve battery power if there is no pushbutton activity for a few
minutes. If this happens, simply push any button to turn the display
back on.
8.
9.
10.
11.
Digital Outdoor Timer
Input: 102-132 VAC 60 Hz, 2.5W max.
Output: 15 Amp/1800W Resistive, 12 Amp Inductive, 1000W Tungsten,
1/3 HP
Installation and User Instructions
MODEL HB800 Series
2 – Get Familiar with the Timer’s Features
Ratings
The timer comes with two LR44
batteries installed.
Remove the pull tab to connect
the installed batteries.
The display will initialize itself,
thenash “12:00 AM” in the
CLOCK mode (Fig. 1).
NOTE: If display doesnt light, the batteries are dead. Replace the
batteries before using the digital timer.
1.
2.
ON
DAYSAV MAN AUTO RAND CLOCK
YEARDATE
MONTH
SKIP
EVENT
MO TU WE TH FR SA SU AM PM
OFF LOC DUSK DAWNON
DAYSAV MAN AUTO RAND CLOCK
YEARDATE
MONTH
SKIP
EVENT
MO TU WE TH FR SA SU AM PM
OFF LOC DUSK DAWN
1 – Activate the Batteries
Plug timer power cord into GFCI only.
Do not exceed capacity of 15 amps.
Fully insert plugs.
Not for use with power tools such as hedge trimmers, weed trimmers and
lawn mowers.
As power cord blends with grass and foliage, use care when operating lawn
equipment near cord.
Keep children away.
WARNING — Risk of fire or electric shock
Follow local electrical codes during use.
Store indoors when not in use.
Dispose of used batteries promptly per local regulations.
NOTICE
Its unlikely that your new digital timer has any existing
programming, but to make sure, use this procedure before setting
the time.
Locate the Reset button. It is the small, round hole adjacent to the
keypad. You will need a pen or paper clip to press this button.
Press and hold the ON/OFF button.
Press the Reset button for 3 seconds and release. The display will
light up and then go blank.
Release the ON/OFF button.
NOTE: Pressing the Reset button without holding down the ON/
OFF button will clear the time, but will not clear the non-volatile
(programming) memory.
1.
2.
3.
4.
3 – Clear Any Existing Programming
NOTE: The following procedure must be completed entirely,
including adjustments, in order for the Astronomic and automatic
Daylight Saving Time features to function properly.
Setting Time
Ensure that the timer is in the CLOCK mode (Fig. 1). If it is not,
press the MODE button a few times (through MANual, AUTO and
RANDom) until CLOCK shows in the mode display area, then
press OK.
Turn the selector knob until the correct hour shows in the first
two digits of the Time Of Day (TOD) display, along with the
correct AM and PM display. Note that the AM and PM displays will
alternate as the time passes through 12.
Press the OK button to set the hour. The last two digits of the TOD
display (minute display) will begin toash.
Turn the selector knob until the
correct time in minutes shows.
Press the OK button to set the
minutes. MONTH, DATE and YEAR
will show in the mode display area,
with the digits under YEARashing
(Fig. 3).
1.
2.
3.
4.
5.
Fig.
3
ON
DAYSAV MAN AUTO RAND CLOCK
YEARDATE
MONTH
SKIP
EVENT
MO TU WE TH FR SA SU AM PM
OFF LOC DUSK DAWN
OK MODE PROG ON/OFF
Fig.
3
ON
DAYSAV MAN AUTO RAND CLOCK
YEARDATE
MONTH
SKIP
EVENT
MO TU WE TH FR SA SU AM PM
OFF LOC DUSK DAWN
OK MODE PROG ON/OFF
4 – Set the Time, Date and Location
Fig.
1
Fig.
2
Battery Holder (back of unit)
two LR44 batteries keep
time up to three months
without power
Low Battery Indicator
programmed data is stored
in non-volatile memory,
so it won’t be lost when
batteries are removed
NOTE: Replace the batteries
as soon as possible after
the low battery indicator
appears.
Time Of Day (TOD)
Display the timer will
automatically adjust for
Daylight Saving Time (DST)
and changing dawn and
dusk times for your location
(Astronomic feature)
1.
2.
3.
Pushbuttons
Two Timed, Grounded Outlets
Selector Knob
Reset Button
4.
5.
6.
7.
+
MO TU WE TH FR SA SU
EVENT
MONTH
ON OFF LOC DUSK DAWN
DATE YEAR
AM PM
MAN AUTO RAND CLOCK
SKIP
DAYSAV
OK MODE
PROG
ON/OFF
1 2
4
3
6
5
7
8
9
10
11

Questions and Answers

  • H
    Hannah WilliamsAug 1, 2025
    Why is my Intermatic HB800 Timer sluggish?
    • M
      Michael ButlerAug 1, 2025
      If your Intermatic digital timer operation is sluggish or not switching on/off at all, even if the low battery indicator isn't showing, the batteries might be getting weak. Replace the batteries to resolve this issue.
  • K
    Kevin BurnsAug 6, 2025
    Why does my Intermatic Timer show ON, but the light is off?
    • B
      brandirussellAug 6, 2025
      If your Intermatic Timer indicates 'ON,' but the connected light or device remains off, the issue might stem from the light or the device itself. Ensure that the light or controlled device is switched on and properly plugged in. If it's a light, consider replacing the bulb.
  • D
    Dustin FreemanAug 12, 2025
    What to do if Intermatic HB800 switches at incorrect times?
    • W
      wilsondonaldAug 12, 2025
      If your Intermatic Timer is switching at incorrect times or skipping programmed times, there are a few potential causes: * Incorrect Programmed Schedule: Review your settings by pressing the PROG button and revise them as needed. * RANDom Mode: If the timer is in RANDom mode, it will vary switching times by up to ±30 minutes. If you don’t want to keep the timer in RANDom mode, press MODE to change to AUTO mode. * Astronomic and Exact Switching Times Conflict: Complete the steps for setting the Time and Date, then temporarily change the date to June 21st. Review the DAWN and DUSK settings by pushing the PROG button. Make sure the specific ON or OFF time settings won’t interfere with these DAWN and DUSK times. When finished, change the Date setting back to today’s date.
  • A
    Andrew ParkerAug 17, 2025
    What to do if my Intermatic Timer won't enter AUTO mode?
    • L
      Lisa JonesAug 18, 2025
      If your Intermatic Timer won’t enter AUTO or RANDom mode when you press MODE, it could be because the time of day or timer settings haven't been set. Make sure the time of day and at least one scheduled activity have been set.
  • J
    Jeff SmithAug 25, 2025
    What to do if lights don't match programmed status on Intermatic HB800?
    • D
      Dennis HernandezAug 25, 2025
      If the lights or controlled devices don’t match the programmed on/off status immediately after setting the time or programming a schedule on your Intermatic timer, it is possible that the digital timer does not “catch up” automatically to the programmed load state. After programming your events or the time, then returning to the AUTO mode, push the ON/OFF button to change the load state if necessary.

Summary

Activate the Batteries

Timer Features Overview

Battery Holder

Holds two LR44 batteries to keep time up to three months without power.

Low Battery Indicator

Indicates when batteries need replacement to preserve programmed data.

Time Of Day (TOD) Display

Automatically adjusts for DST and changing dawn/dusk times.

Pushbuttons

Controls for operating the timer's functions.

Two Timed, Grounded Outlets

Sockets for connecting devices to the timer.

Selector Knob

Used for navigating and selecting options.

Reset Button

Small button to reset the timer's functions.

Clear Existing Programming

Set Time, Date, and Location

Setting Time

Procedure to set the current hour and minute for the timer.

Adjusting Daylight Saving Time

Configure automatic DST adjustments or manual settings.

Setting Location

Set the geographical location for accurate astronomical features.

Adjusting Dawn and Dusk

Input or accept calculated sunrise and sunset times.

Set ON and OFF Events

Viewing an Event

Navigate through programmed events before making changes.

Programming an ON Event

Set a specific time, dawn, or dusk to turn a device on.

Programming an OFF Event

Set a specific time, dawn, or dusk to turn a device off.

Select Operation Mode

Mount Timer

Plug In Timer

About the Batteries

Change Program Times

Skipping an ON or OFF Event

Disable an existing ON or OFF event that is no longer needed.

Revising an ON or OFF Event

Modify the settings of an existing ON or OFF event.

Troubleshooting Guide

Limited Lifetime Warranty

Intermatic HB800 Series Specifications

General IconGeneral
BrandIntermatic
ModelHB800 Series
CategoryTimer
LanguageEnglish

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