How do you get this to hold programming? After reset/programming and sitting ~30s , it shows an "a" and doesn't work (manual won't work). Ideas?

The 'a' indicates that the timer is locked. The timer auto-locks after 30 seconds. To unlock, you have to press the "C/R" key repeatedly (4-6 times, I think) in 10 seconds. The "a" will go away, and you can program start and stop times or operate manually

Can I use this to control a solar light for my chicken coop? If so, can you recommend a tutorial or specific parts I can buy?

yes it works great for that, I used a solar panel from harbor freight on an old dolly with a used battery (made the entire unit mobile and a quick disconnect to the lights), I wired the solar panel to charge the battery then run wires from the battery to the timer which has been flawlessly working, I kept it all a 12 volt system, I bought 12 volt led lights and wired them to the other side of the timer, I had trouble setting the timer, but you can you tube it and its all there, this has kept my egg production up for sure and it cuts off long enough to give them a good nights sleep

What functions does the manual mode provide. can i push manual and have it close the switch for x minutes like my irrigation controller?

Manual mode just lets you operate the switch in on or off mode untill you change the setting back to auto mode where the timer schedule takes over.

Will this single timer open and close a chicken coop door? I can only get the linear actuator to move in one direction. The a

This is a timer that allows voltage to pass through. You need a control system like a plc to open and close a door. Cheaper to walk out and do it.

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JVR 12V Timer Switch - Programmable DC/AC/Solar Relay, 16 Schedules

Product ID: 15949035

Details

Brand
JVR
Color
White
Item Weight
68 g
Material
Plastic
Product Dimensions
2.36"D x x

⏳16 programmable schedules

💾Power outage memory

🔋12V DC power efficient

€ 31.37

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Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⏰ Automate smarter, not harder—because your time deserves precision.

EFFORTLESS PROGRAMMING - Intuitive LCD screen and clear instructions make setup a breeze—no tech headaches here.
ENERGY SMART AUTOMATION - Runs on 12V DC, optimizing power use and seamlessly integrating with solar or battery setups.
VERSATILE DIY ESSENTIAL - Perfect for automating coop doors, fish feeders, lights, and more—your smart home’s secret weapon.
UNINTERRUPTED RELIABILITY - Power outage memory ensures your schedules stay intact, so your automation never misses a beat.
PRECISION SCHEDULING MASTERY - Set up to 16 independent ON/OFF schedules from 1 minute to 7 days for ultimate control.

The JVR 12V Timer Switch offers programmable control with up to 16 schedules, a wide timing range from 1 minute to 7 days, and a user-friendly LCD interface. Powered by energy-efficient 12V DC, it supports diverse applications from solar setups to home automation projects. With power outage memory and a 1-year warranty, it guarantees reliable, hassle-free automation for professionals and DIY enthusiasts alike.

Specifications

ASIN	B00WR0ELCO
Battery Life	10 years
Best Sellers Rank	#55,897 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #59 in Plug-In Timers
Brand	JVR
Brand Name	JVR
Color	White
Customer Reviews	4.2 out of 5 stars 1,762 Reviews
Item Dimensions D x W x H	2.36"D x 2.36"W x 1.26"H
Item Highlight	1 min to 7 days range, LCD display, outage memory, for coop doors, fish feeders, lights, appliances, 12V battery ready
Item Weight	68 g
Manufacturer	JVR Online
Manufacturer Part Number	TL34
Manufacturer Warranty Description	Manufacturer warranty for 1 year from date of purchase.
Material	Plastic
Material Type	Plastic
Model Number	COMINHKPR90865
Number of Items	1
Number of settings	16
Product Dimensions	2.36"D x 2.36"W x 1.26"H
Screen Size	2 inches
Unit Count	1 Count

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€ 31.37

Duties & taxes included

In stock

Sold byAmazon FranceDelivered 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 France.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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