Of the two terminals, which one is hot and which one is load?

It can be either or. Usually, top is supply, bottom is load.

Do the contacts close on temp drop? I need freeze protection with a 35deg close and 45 open.

not this control you will need to get a control that has both normal open and normal close ( three terminals ) not this one it only has two and it is make on rise.

Compressor kicks on at 0 temperature?

Yes, the 1609-101 is capable of doing that

Can this be hooked up to 220V Walk in cooler?

This unit only has a single pole, for 220 volt you should really use a double pole or a relay, so that you don't have a hot 110 volt going to the machine whether it's running or not. 220 volt uses 2-110 volt circuits. Good Luck.

Emerson 1609 101 Refrigeration Temperature Control

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Description

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

DUAL SCALE DISPLAY - Seamlessly switch between Fahrenheit and Celsius for global compatibility
ROBUST BUILD QUALITY - Engineered by Emerson and White Rodgers for long-lasting performance
COMPACT LIGHTWEIGHT - Streamlined dimensions (14.61 x 6.35 x 31.75 cm) fit easily into any HVAC setup
TRUSTED BY PROFESSIONALS - 4.4-star rating from 245+ users confirms dependable operation
PRECISION TEMPERATURE CONTROL - Hydraulic action ensures reliable, accurate refrigeration management

The Emerson 1609-101 Refrigeration Temperature Control by White Rodgers offers precise hydraulic temperature regulation with dual Fahrenheit and Celsius scales. Compact and lightweight, this Mexico-made thermostat is trusted by HVAC professionals for reliable, long-term refrigeration management.

Specifications

ASIN	B003U4N7AI
Batteries Required?	No
Batteries included?	No
Colour	12.5
Customer Reviews	4.4 4.4 out of 5 stars (245)
Date First Available	7 Aug. 2012
Item Package Quantity	1
Item Weight	454 g
Item model number	1609-101
Manufacturer	Emerson Climate Technologies
Part Number	GID-585000
Product Dimensions	14.61 x 6.35 x 31.75 cm; 453.59 g
Size	UNT

Reviews

P**S

excellent product

29.04.2025

X**G

I install this over year and work good,very good quality

18.02.2025

M**O

Excelente

12.01.2026

C**R

Walk in fridge

28.09.2024

G**T

I am using this for my walk in cooler roof, 240 V , commercial grade, it’ is do the job, Top wheel for the temperature control not turning, but I got it to set my require temperature.

9.01.2025

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