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Simple RF M4 Receiver - 315MHz Momentary Type

Product Code:ADA-1096

£5.99
Ex.Tax £4.99

Availability: 29

Simple RF M4 Receiver - 315MHz Momentary Type
Questions1 Answers1 | Expand All
How to turn off - Latch Type
When using the L4 latch type, how can you turn off the pins? Can you only have 3 pins and a empty one to use as the off?
John
  • PLEASE NOTE THIS IS THE M4 MOMENTARY TYPE
    1 pin is always active on the L4 type. To turn one pin off you need to to another on.
    ModMyPi LTD
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These Simple RF receivers are the easiest way possible to add wireless control, painlessly! There's no programming, configuring or addressing - simply power the receiver with 5 - 10VDC and press the buttons on a matching RF keyfob remote. When the A button is pressed, it activates the first pin, when the B button is pressed, it activates the second one, and so forth for all four buttons. There's no microcontroller required, its just a simple one-to-one link.

These modules make it easy to control your project once its in an enclosure or from across the room, but there are some things to watch out for. One is that they do not have 'addressing' - if you have multiple receivers in a room, they'll all work at the same time with a single remote. Another is that there's no error checking or bi-directional link - that means the remote doesn't know if the module received the message or not. Third, there are a few different types of receivers and each one looks identical but they are actually differently!

  • The M4 momentary type acts like a push button - when the A button is held down, the matching pin goes high. When the A button is released, the matching pin goes low. The pins only go high when a button is pressed
  • The T4 toggle type acts like an alternating toggle switch - when the A button is pressed the first time, the matching pin goes high. When the A button is pressed a second time, the matching pin goes low. The pins are turned on and off by repeated presses
  • The L4 latch type acts like a selector switch - when the A button is pressed the first time, the matching pin goes high. When the B button is pressed it turns A's pin off and turns B's pin on. When C is pressed, it turns B off, etc. Only one is on at a time. If you press the same button twice, it doesn't turn that pin off.

This product is the Momentary M4 type! It only includes the receiver module, you will also need to pick up a keyfob transmitter Each receiver also has a VT pin, which will go high if any of the pins are activated. You can sort of use it as an 'interrupt' indicator.

Check this video for a more visual description:

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