I have 3 switches. Will each remote control one switch. They will all be together and I need 3 remotes to separately control 3 switches.

I don't see the documentation that used to be provided in the product information, but the remote has to be programmed to the unit. I'm reasonably sure each remote will be different - and in the case you needed each of the three remotes to operate all three units, you can program each unit to work with multiple remotes, effectively giving each remote "permission" for all units. The trouble with posting questions here, is that you more often get answered by simple fools who have bought these items before you -rather than to have SELLERS or MANUFACTURERS answer these questions. THIS fool is pretty sure you'll be FINE for the planned use you described. Just make sure the seller's page you're purchasing from says, "...and FREE RETURNS" - send it BACK if it doesn't work out - but I'm reasonably sure you're good-to-go..!

I bought 2 of these set them both up the same amd only one works, the green light comes on when you click the remote but you dont hear the solenoid,

These are fairly straightforward. I’d say if your not hearing the relay, then most likely it’s defective. I used these for roof fans in my RV and it was simple 12v in and out.

it is work with car amplifier, when you press button of, they cut signals + and - ... i need one that cut + positive ..

It is my understanding that this unit is for AC voltage only. Therefore it will not have + - markings and will not work.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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DC Remote switch

Product ID: 98810593

Details

Connector Type
Wireless
Contact Material
Silver
Contact Type
Normally Open
Current Rating
30 A
Mounting Type
Wall Mount

⚡40A high-power relay

📶328ft RF signal range

🔄Multi-remote & multi-switch pairing

QAR 98

Duties & taxes included

In stock

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Description

📡 Command your space wirelessly—power and control at your fingertips!

PLUG PLAY SIMPLICITY - Factory pre-paired—no app, no WiFi, no hassle. Just wire and go.
POWERHOUSE PERFORMANCE - Handles up to 40A for heavy-duty appliances with rock-solid stability.
UNMATCHED WIRELESS REACH - Control devices effortlessly from up to 328ft away—even through walls and floors.
VERSATILE INDUSTRIAL GRADE USE - Perfect for pumps, motors, lights, security systems, and more across 12V to 72V setups.
SEAMLESS MULTI CONTROL FLEXIBILITY - Pair multiple remotes to one switch or one remote to many switches for ultimate convenience.

The VONVOFF Remote Control Switch features a robust 40A relay supporting 12V to 72V systems, delivering reliable wireless control up to 328ft with RF technology. It supports flexible multi-remote and multi-switch configurations, requires no app or WiFi, and is ideal for industrial and security applications requiring stable, high-power switching.

Specifications

ASIN	B07JFH6VQH
Best Sellers Rank	#68,536 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #284 in Garage Door Keypads & Remotes
Brand Name	donjon
Coil Voltage	12 volts
Connector Type	Wireless
Contact Current Rating	40 A
Contact Material	Silver
Contact Type	Normally Open
Current Rating	30 A
Customer Reviews	4.5 4.5 out of 5 stars (1,014)
Item Highlight	Wireless Remote Switch Kit for Pump,Lights,Fan,Motor,Security Systems,etc (black)
Item Weight	125 g
Manufacturer	DONJON
Maximum Switching Current	40 A
Minimum Switching Voltage	12 volts_of_direct_current
Model	eod-302
Mounting Type	Wall Mount
Number of Terminals	3
Operation Mode	ON-OFF
Part Number	eod-302
Unit Count	1 Count
Wattage	3000 watts

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