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- #197,741 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #14 in Radio Frequency Transceivers
Product Description
[Transmitter module ] Product Model: TX118SA-4
Transmitting power: 11dbm
Emission current: 10 mA
Rate of fire: maximum 10KB / S
Operating Voltage: DC 3V-24V
Encoding : EV1527 Learning code
Each module has a unique ID address code.
All modules K1-K4 four key code is the same.
[Receiver module ] Product Model: RX480E-4
Working Voltage : DC3.3~5V
Quiescent Current : ≤5mA
Output current : 10 mA
Working Frequency: 433MHz
Receive Sensitivity: -108dB
Working Temperature : -25~75
Working mode: Momentary Mode , self-locking (Toggle-Mode of the 4 Channels) , interlocking.
The correspondences of the 4-channel output CMOS level signals are as follows:
K1---D0 , K2---D1 , K3---D3 , K4---D2
[Antenna] Product Model: ANT-TX/RX
Frequency range (MHz): 433MHz+ / -6MHz
Gain (dBi): 2.2
Input impedance (OHM): 50
Max-power (dBm): 30
Diameter: 5 mm
How to match the transmitter and receiver？
- 1. Delete existing data: Press learning button(on the receiver) 8 times. Response: LED flashes 7 times.
- 2. Learning remote code: press learning button(on the receiver) once, twice or three times (see below). LED turns on: learning mode is active. Press any button of the remote control. LED indicator flashes three times: learning successfully completed.
- 3. Test: after the above operation , the receiver board can be controlled by the remote control. More transmitters with different IDs can be learned and stored additionally, starting with step 2. A mixture of different modes is possible.
- Button usage (sets mode and starts pairing process): Press once: Inching mode (Momentary Mode) Press twice: self-Lock Mode (Toggle-Mode of the 4 Channels) Press three times: interlocked mode (selected channel active and be cleared, if another channel becomes active)
" VT " On the receiver what is used for ?
The VT pin has 2 functions：
1, Using VT to control the LED as an Indicator, when any pin D0-D3 signal output, VT have a signal output at the same time.
2, Using VT and +V can replace the button function on the receiver. (Note：The VT terminal is active when a signal is received, i.e. if any of the 4 channels is "turned on" the VT line is "turned on".）
The picture shows as follows:
Hope H
Reviewed in the United States on October 2, 2024
These modules look good, nice solder points, decent materials, etc. Unfortunately, the documentation with them is so poor that I can't test them further. If an item comes damaged, I do not review it because there is no way to know where or how the damage occurred. In this case though, the issue isn't that they don't work, it's that the info is too sparse to troubleshoot them.
Chameleon
Reviewed in the United States on April 8, 2024
These types of transmitters and receivers are short range by design. Anyone who expects really long range is expecting more than they should. I'm consistently getting 40 feet, which is about what I'd expect from this type of transmitter and receiver. They work well inside, so long as they're not going through many walls or metal. I haven't tested it, but it's likely that if you want greater range, a higher voltage supply on the transmitter may help. I've been using a 5V supply. Thankfully, they have a really wide voltage input range. Ensuring you use a properly tuned antenna on both the receiver and transmitter would also help. The transmitters are smaller than the photo shows them to be. Transmitters are 18.2 x 18.2mm (minus pins) and the receivers are 12.5 x 28mm (minus pins).The transmitters are where I have an issue. The issue is that the pins on the transmitters are all but useless for prototyping. They are 2.0mm spacing, not 2.5mm, which is the standard for breadboards and most cable connectors used for prototyping. They are also too short to engage with DuPont-style connectors or breadboards. They are 4.5mm from bend to point (longest distance), where standard 2.5mm header pins are 6.4mm from bend to point. This means that even if you let the pins splay out to connect to a breadboard, they don't go deep enough to engage with the connector strips on a breadboard or the terminals inside a DuPont connector. You can leave the terminals bare, but that leaves lots of opportunity for shorting the pins. These are not among the most friendly headers to desolder from the boards.It would be far better for us users if the manufacturer simply omitted the pins on the transmitters entirely. The little bit of creativity to work around the lack of pins would be less than the effort to try and figure out how to use non-standard headers, most specifically pins that are too short.
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