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Electronic 4-Circuit

24-Hour Time Switch

Installation and Setup Instructions

With 100-Hour Backup

Federal Communications Commission (FCC) Notice for ET2000 Series Time Switches

Description

This document explains the setup and configuration of the Intermatic ET2145 
4-Circuit Electronic 24-Hour Time Switch. The ET2145 time switch automatically 
switches loads according to the entered 24-hour schedule. The time switch can 
support up to 48 fixed ON and 48 fixed OFF events (96 total). Each fixed event can 
be applied to any combination of circuits and days.
The time switch features an LCD and panel-mounted control buttons to set, 
review, and monitor the time switch functions, including setting date and time, 
schedule creation, enabling or disabling Daylight Saving Time (DST) and 
configuring DST switchover dates.
Follow these instructions to complete the installation and programming of the 
ET2145 time switch.

This device complies with part 15 of the FCC rules. Operation of this device is subject to the following two conditions: (1) This device 
may not cause harmful interference, and (2) This device must accept any interference, including interference that may cause 
undesired operation. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to 
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the 
equipment is operated in a commercial environment. This equipment generates, uses and radiates radio frequency energy and, if 
not installed and used in accordance with instructions, may cause harmful interference to radio communications. Operation of this 
equipment in a residential area is likely to cause harmful interference that requires the user to correct at his or her own expense.

MODELS ET2145C, ET2145CR, ET2145CP

Shown in indoor/outdoor 

lockable metal enclosure 

NOTICE

•  Do NOT touch circuit board components, contact can create a static discharge, which can damage these electronic components.

•  Disconnect power at the circuit breaker(s) or disconnect switch(es) before installing or servicing.
•  More than one circuit breaker or disconnect switch may be required to de-energize the equipment before servicing.
•  For plastic enclosures, bonding between conduit connections is not automatic and must be provided as part of the installation.
•  Installation and/or wiring must be in accordance with National and Local Electrical Code requirements.
•  Use #14-#8 AWG wires, rated at least 105°C - COPPER conductors ONLY.
•  If the power disconnect point is out of sight, lock it in the OFF position and tag it to prevent unexpected application power.
•  Make sure there is no wire insulation under the terminal plate on the time switch connector. Firmly tighten terminal screws.
•  For outdoor locations or wet locations (rain-tight), conduit hubs that comply with requirements of the UL514B (standard for fitting conduit and 

outlet boxes) are to be used.

•  Do not remove insulator that is covering terminals.
•  Do NOT exceed maximum current carrying capacity.
•  KEEP DOOR CLOSED AT ALL TIMES when not servicing.

Risk of Fire or Electric Shock

     WARNING

Summary of Contents for ET2145C

Page 1: ...nt This equipment generates uses and radiates radio frequency energy and if not installed and used in accordance with instructions may cause harmful interference to radio communications Operation of t...

Page 2: ...a 3 4 inch knockout is needed remove the 1 2 inch knockout first then the 3 4 knockout 6 Place the enclosure in the desired location providing space for the enclosure door to swing open fully 7 Secur...

Page 3: ...ON FOR TWO CONTACTOR CONTROLS COM4 NO 4 COM3 NO 3 COM2 NO 2 COM1 NO 1 AC IN TIMER POWER CIRCUIT 4 CIRCUIT 3 CIRCUIT 2 CIRCUIT 1 L2 N L1 OUTPUT CONFIGURATION PUL CIRCUIT 1 AND 2 OUTPUT CONFIGURATION PU...

Page 4: ...e time switch s operation to AUTO mode ENERGY SAVER mode or MANUAL mode only MANUAL mode will appear if there are no scheduled events and read or write an event schedule from a USB memory stick NOTE I...

Page 5: ...E to save the DST rules and move to the next mode selection Setting Fixed Timed Events Access the Fixed ON OFF screen to set fixed switching times Odd numbered events are for ON switching and even num...

Page 6: ...e set Return to step 2 All the events are set Press MODE to save and exit The procedure is complete Example July 4th would have a start date of Jul 4 and an end date of Jul 5 At 12 00 AM on July 4th t...

Page 7: ...g Time Switch Program Data from a USB Memory Stick The time switch has the capability to read program data event schedules holidays output configuration DST on off setting and DST rule setting from a...

Page 8: ...F time Indefinite Shipping Weight 2 5 lb 1 1 kg Enclosures Rainproof Type 3R indoor outdoor lockable metal enclosure ET2145CR Type 1 indoor lockable metal enclosure ET2145C Rainproof Type 3R indoor ou...

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