will this work on a pull behind sprayer

That is exactly what Fimco intends it to be used. Your problem is getting one that actually works. I purchased two and they both were defective.

What is the range of the remote?

I tested it and went out 140 feet and it was still working. I'm sure it can get much further, but the item I was testing it own was out of hearing any further then the 140 feet. . This was with the antenna pulled out. I got about 40 with the antenna in.

Can you pair one remote with 2 receivers?

Turn both on and off at the same time, yes.

will it work with 24v application

I dremeled mine open to see if I could install a mechanical bypass switch when I don't have the remote handy. The relay inside is 12v. 24v may fry it.

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Fimco 7771938 12 Volt On/Off Wireless Remote Control 250 Feet Range Quick Connect to Fimco 5275086, 5275087 or all 12 Volt Sprayer Pumps up to 20 Amps, Convenient Keychain Clip and Collapsable Antenna

Product ID: 263396677

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Details

Brand
Fimco
Special feature
Wireless
Colour
Black
Max number of supported devices
1
Compatible devices
12-volt or up
Connectivity technology
wireless

📡250 ft wireless range

🔋12V power, supports up to 20A

🔗Quick connect & keychain clip

Description

📡 Take command from anywhere—wireless power at your fingertips!

EXTENDED 250 FOOT RANGE - Control your equipment from a distance with reliable signal strength
VERSATILE COMPATIBILITY - Perfect for ATVs, lawn tractors, boats, and more—upgrade your gear instantly
COMPACT PORTABLE DESIGN - Keychain remote with clip and collapsible antenna for on-the-go use
QUICK CONNECT CONVENIENCE - Easy plug-and-play setup with quick connectors or hard-wiring options
EFFORTLESS WIRELESS CONTROL - Operate any 12V accessory up to 20 amps without messy wiring

The Fimco 7771938 Wireless Remote Control offers seamless on/off operation for any 12-volt accessory drawing up to 20 amps. With a robust 250-foot wireless range, quick-connect installation, and a compact keychain remote featuring a collapsible antenna, it’s engineered for professionals who demand convenience and control across ATVs, utility vehicles, boats, and more.

Specifications

Manufacturer	Fimco
Part number	7771938
Item Weight	118 g
Product Dimensions	18.03 x 11.18 x 4.06 cm; 117.93 g
Batteries	1 Nonstandard Battery batteries required. (included)
Item model number	7771938
Colour	Black
Material	Plastic
Voltage	12 Volts
Item Package Quantity	1
Switch style	Ignition Switch
Special Features	Wireless
Included components	Fimcom, Inc. 7771938
Batteries included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
tech_spec_battery_description_toys	1 nonstandard_battery

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