Four Channel Wireless Transmitter and Receiver
For wireless remote control applications
Click on picture for larger view
|
|
|
KT4A TRANSMITTER KIT $36.14 |
KR4A RECEIVER KIT $51.86 |
KR4B RECEIVER KIT $67.50 |
40.6mm X 45.7mm |
45.7mm X 71.1mm | 66.04mm X 76.2mm |
| 1.6" X 1.8" | 1.8" X 2.8" | 2.6" X 3.0" |
The KT4A transmitter and KR4A, KR4B receiver kits include high quality FR4 epoxy glass, etched and drilled PC boards with legends screened on top that show where each component is to be placed. The boards have a solder mask on the bottom side that covers all interconnecting metal to help prevent solder shorts.
Four control bits can be sent individually or simultaneously by pulling transmitter inputs down. A fifth transmitter input can remotely reset latched receiver outputs. Both the KR4A and KR4B receivers have switch selectable momentary or latched outputs. The KR4A output circuits have open collector bipolar transistors to drive loads. The KR4B receiver outputs are single pole, single throw (SPST) relays with contacts rated to switch 10 amperes at 120 volts AC or 30 volts DC.
The kits uses our TM1V and RM1V RF transmitter and receiver modules that operate at 418 MHz with a range of better than 300 feet. Thanks to these new modules the problems associated with building your own transmitter and receiver such as tuning by adjusting capacitors and inductors are things of the past. After assembling the kit you simply apply power to the transmitter which is SAW (Surface Acoustic Wave) based for accurate frequency control and attach a 6.7 inch whip antenna to send data. The same is done for the receiver which is a SAW based superhetrodyne having excellent stability and sensitivity. Absolutely no adjustments of any kind are required.
The transmitter is powered by a 6 to 9 volt battery and draws less than 3 microamperes of standby current and an average of only 2 milliamperes during transmit for long battery life. The receiver is powered by a 12 volt wall transformer. This design uses our GL-104 encoder/decoder which makes switch selectable momentary or latched outputs possible.
See how to order for price and ordering information.
and view or print a manual containing details, schematic, parts list and applications.
If you don't have Acrobat Reader, download a free copy so you can view and print our PDF
documents.
Visit our Related and Useful links to view or print data sheets on the devices used in this project and on other discrete and integrated circuits from major semiconductor manufacturers.