I need a 12v switch to respond to a 433.92 Mhz signal

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Discussion Overview

The discussion revolves around finding a 12V switch that can respond to a 433.92 MHz signal, specifically for interrupting a DC current to control an actuator. Participants are exploring potential solutions, including the need for additional technical details about the RF signal and its source.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests a source or schematic for a 12V switch that responds to a 433.92 MHz signal.
  • Another participant asks for details about the RF signal's source, modulation, and expected signal level to provide better assistance.
  • A participant describes the requirement for a switch that closes upon receiving the RF signal to allow voltage to pass to an actuator.
  • One participant mentions the difficulty in obtaining technical data but provides the model and serial number of the source device, a DSC Wireless Heat & Smoke Detector.
  • Another participant suggests that a compatible receiver from the same company may be necessary and notes that the DSC RXL2-433 wireless receiver relay driver does not list the fire alarm as a compatible device, although it might still work.
  • There is a suggestion to clarify the overall goal of the project to recommend alternative solutions.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best approach or solution, and multiple competing views regarding the necessary components and compatibility remain present.

Contextual Notes

Limitations include a lack of detailed technical specifications about the RF signal and the compatibility of various components with the DSC device.

Who May Find This Useful

Individuals interested in RF control systems, electrical engineering, or those working on projects involving wireless signal activation may find this discussion relevant.

remy2078
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Im not an elctrical engineer but I do need a source for the above mentioned switch. I would even be open to a simple schematic. Please Help.
 
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remy2078 said:
Im not an elctrical engineer but I do need a source for the above mentioned switch. I would even be open to a simple schematic. Please Help.

Welcome to the PF.

What is the source of that signal? How is it being modulated? What receive signal level do you expect from a resonant antenna at your receiver?
 
This is a simple 12v dc current that I need to interrupt in the form of a RF receiver switch that simply will close up receiving the radio signal thus allowing the voltage to pass to the accuator
 
remy2078 said:
This is a simple 12v dc current that I need to interrupt in the form of a RF receiver switch that simply will close up receiving the radio signal thus allowing the voltage to pass to the accuator

Sure. But you need to answer the questions I asked, in order for us to help you. We need to know a lot more about the RF signal (its source, strength, modulation, etc.).
 
I can't seem to get that technical data all I can provide is the model and serial number of the source and hope you can find the specific info you need. WS4916 - DSC Wireless Heat & Smoke Detector
 
For this sort of thing, you'd almost certainly need a receiver from the same company (unless you disassembled one and discovered that the wireless module is just a COTS type module that you can purchase elsewhere).

Unfortunately, the DSC RXL2-433 wireless receiver relay driver doesn't list the fire alarm as a compatible device (though it might still work, even if it's not intended for the application--I'd contact DSC to see if they'd know). Using the DSC RF5108-433 receiver module doesn't output to a user form either (it's for integration into the DSC panel).

Maybe if you backed up a bit and told us what you're trying to accomplish, we can recommend an alternative?
 

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