Where is the best placement for the thermostat in a walk in freezer?

In the return air slightly below the bottom of the coil. I did Super Market refrigeration 30 years before moving to Building Automation.

Is this single pole double throw? (spdt)?

It's been a while since I installed it but I'm pretty sure it's SPST. Used on walk in cooler.

does this unit have Compressor Delay Protection?

Ki-Jin Yoon, Thank you for your question. The Johnson Controls A421 is an electronic temperature control that includes an “Anti-Short Cycle Time Delay”. The below link is to the A421 page with some literature embedded on the page. Please let us know if you have any further questions. https://www.amazon.com/Johnson-Controls-Electronic-Temp-Control/dp/B07GB543Y7 -Johnson Controls

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Johnson Controls - CECOMINOD078043 A19ABA-40C Line V Mechanical Thermostat, 120 to 277 VAC

Johnson Controls - CECOMINOD078043 A19ABA-40C Line V Mechanical Thermostat, 120 to 277 VAC

Product ID: 22807461

Details

Brand
Johnson
Controller Type
Push Button
Model Name
A19ABA-40C
Product Dimensions
30"D x 8"W x
Special Feature
Liquid-Filled

📏Compact 30x8x6 inch design

⚙️Liquid-filled sensing tech

🌡️Wide temp range 120-277VAC

₨3610

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered 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 Seychelles.

Secure transaction

Description

🌡️ Stay cool, stay smart — control your climate like a pro!

SPACE SMART DESIGN - Compact rectangular enclosure fits discreetly on any wall.
ECO FRIENDLY SENSING - Advanced liquid-filled elements ensure reliable, environmentally conscious performance.
USER FRIENDLY OPERATION - Manual push-button control for intuitive, hassle-free adjustments.
VERSATILE COMPATIBILITY - Operates seamlessly from 120 to 277 volts AC for diverse HVAC systems.
PRECISION TEMPERATURE CONTROL - Maintain exact comfort with constant differential across the full range.

The Johnson Controls A19ABA-40C is a compact, wall-mount mechanical thermostat featuring liquid-filled sensing elements for precise temperature regulation. Supporting a wide voltage range (120-277 VAC) and offering fixed or adjustable differentials, it delivers reliable, eco-friendly HVAC control with easy manual push-button operation.

Specifications

ASIN	B003U4N74O
Additional Features	Liquid-Filled Sensing Elements, Variety of Sensing Element Styles
Best Sellers Rank	#169,606 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #96 in Thermostat Controllers
Brand Name	Johnson Controls
Color	Gray
Connectivity Protocol	Wi-Fi
Connectivity Technology	Wi-Fi
Control Method	Remote
Control Type	Button Control
Controller Type	Push Button
Customer Reviews	4.2 4.2 out of 5 stars (121)
Display Type	analog
Global Trade Identification Number	10785028083781
Included Components	1 x Control Unit
Item Dimensions D x W x H	30"D x 8"W x 6"H
Item Type Name	Johnson Controls
Item Weight	16 ounces
Manufacturer	Johnson Controls Inc
Manufacturer Part Number	CECOMINOD078043
Material Type	Liquid-filled sensing element
Model Name	A19ABA-40C
Model Number	A19ABA-40C
Mounting Type	Wall Mount
Number of Items	1
Power Source	Corded Electric
Product Style	Compact
Shape	rectangular prism
Temperature Control Type	Manual
Unit Count	1 Count
Voltage	277 volts

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

₨3610

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered 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 Seychelles.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews