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4 relay

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4 relay Customers Reviews

  • Very useful

    posted by keesto

    Works very well. Compared to similar products this one transmits clear and undistorted video signal with no interference so far. Build quality is quite good. The IR relay (which operates at different bandwidth) is also quite good, but seems to be more prone to interference from other radio sources.
    This is a pretty powerful transmitter, so it's a good idea to position the transmitter and receiver away from existing 2.4ghz transmission pathways you might use. IE, don't put the transmitter/receiver near other 2.4ghz apparels. The video signal is good, but it's still video quality, so no component/hdmi quality here. Same goes for audio, it's 2-channel stereo and that's it. Cabling is always better option for AV transmission, but in case you need decent wireless relaying, this is the thing to get.
    Works very well and can be easily recommended for it's value for money.
  • excelent

    posted by pilopolus

    When you review a product, it will be very helpful for someone else in making an informed decision about the product while shopping for it. If you own the item, DX reward points will be added to your account when your review is listed as a way to thank you for sharing. Review points are effective immediately and usable for red
    When you review a product, it will be very helpful for someone else in making an informed decision about the product while shopping for it. If you own the item, DX reward points will be added to your account when your review is listed as a way to thank you for sharing. Review points are effective immediately and usable for red
    When you review a product, it will be very helpful for someone else in making an informed decision about the product while shopping for it. If you own the item, DX reward points will be added to your account when your review is listed as a way to thank you for sharing. Review points are effective immediately and usable for red
  • tested without any board olny with 5V wires and seems it is ok

    posted by SiPi77

    - high voltage relays- seems robust enough for me- Good prize
    - my 1st cons asks a question: howlong will work if the relays must be on to get a permanent on state
    - my opinion this can be a good choice for short time switched on os short time swithced off functions (as the relay has 3 connectors - without power on the relay's primary you can decide the switched side on or off by debault).
  • Nice cheap timer relay

    posted by mr22turbo

    Great price! Screwed one open and the electronics on the inside are well made.Its possible for the timer to count down or up to the set time. Timer can be set in seconds, minutes and hours.
    There are different types of timers, check the product number, this one needs AC220V as a power source. Timer has possiblity to hook up a reset and pause switch. The relay can be connected as normally opended as well as normally closed. English manuals can easly be found on the internet through the product number.
    Great product for a great price!
  • Easy to use, hi power relay module

    posted by bigjack65

    Really high quality product. Board is made of good material, relay tracks are large to manage hi power, there is a milling in the PCB to ensure insulation between power and control tracks. Every channel have it's own led as monitor. Driver and relay are decoupled with an optocoupler assuring kilovolt of protection. You can separate supply for driver and for relay.
    Important to say: relay driver has a POSITIVE logic: relay is activated when input is tied to +5Vcc respect to the driver ground.
    Definitely a great product of great quality. I'll order another soon.

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