How do I install these? (First time pool owner)

On the disc that spins arounds with all the times of day on it, place the flag for "ON" at what time you want it on. The disc slips into the forked part of the flag. The flag portion goes under the disc to trip the on/off switch as it spins around. The words ON or OFF should face you when you look at the timer. Place a set screw in the hole on the flag and tighten it to hold it in place. The same goes for the "OFF" position flags. I tighten the screws with small pliers as they seem to work loose over time, if I don't.

Why does this come with two different colored 'on' triggers?

The two color "ON" switches are different and for different type of timers. If you have the T100 Series timer, use the green "ON". If not, use the silver "ON". Hope this helps!

Has 156t1950a been replaced by 156t1978a?

I don't know but look in your timer box and you will find the correct number that you will need.

Want to make sure I understand replacement. I will use the green and gold for pool timer. Which color is to turn on and which color to turn off?

The timer switches are etched with "ON" on the green switches and "OFF" on the gold switches.

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Intermatic 156T1978A Time Switch Trippers for T100 Series Timers 2 On 2 Off With 4 Screws Per Package (2 Pack)

Intermatic 156T1978A Time Switch Trippers for T100 Series Timers 2 On 2 Off With 4 Screws Per Package (2 Pack)

Product ID: 330942738

Details

Colour
Original
Brand
Intermatic
Material
Metal
Product dimensions
51D x 25W x
Item weight
0.01 Ounces

🔧Easy installation with included screws

⏱️Precision timing control

🛠️Compatible exclusively with Intermatic timers

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Description

⏳ Master your schedule with precision and style!

SECURE FIT - Includes 8 set screws ensuring stable, reliable mounting
NO BATTERIES NEEDED - Maintenance-free, purely mechanical operation
COLOR CODED TRIPPERS - Gold, silver, turquoise for intuitive ON/OFF setup
DUAL PACK CONVENIENCE - Two kits per package for extended use or backup
VERSATILE COMPATIBILITY - Designed for T100, T7000 & WH40 Series Intermatic timers

The Intermatic 156T1978A Time Switch Tripper Kit offers a dual-pack solution with color-coded trippers and set screws, engineered exclusively for Intermatic T100, T7000, and WH40 Series timers. This compact, battery-free kit ensures precise ON/OFF timing control with easy installation, perfect for professionals seeking reliable and efficient lighting automation.

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$40.62

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

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1 week ago

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Product Dimensions	5.08 x 2.54 x 5.08 cm; 0.28 g
Item Weight	0.01 Ounces
Batteries required	No

Intermatic 156T1978A Time Switch Trippers for T100 Series Timers 2 On 2 Off With 4 Screws Per Package (2 Pack)

Details

Details

Description

Specifications

Common Questions