Relay Switch Board Kit

by QRP-Labs


Relay Switch Board kit

1 in stock


This is a kit and you will be receiving a plastic bag with components. The photos are representative examples of the completed kit.

This relay-switched LPF board kit can have up to five additional LPF’s plugged in, permitting the </span><a href=”″>Ultimate3 and Ultimate3S QRSS/WSPR kits</a><span> to sequence between 6 bands (including the LPF on the main U3 board). The board size is 80 x 37mm, the same as the </span><a href=”″>U3</a><span>, so the boards stack together using four 25mm hex spacers. The </span><a href=”” target=”_blank”>plug-in LPF modules are available separately, click here</a><span>.<br /></span><br /><span>The kit can also be used with your own homebrew radio projects!</span><br /><br /><span>Some people wish to interface this relay kit with 3.3V systems such as the Raspberry Pi, or systems which cannot support the 28mA relay current from processor I/O pins directly. This relay driver is suitable for such cases</span>

Additional information

Weight 0.2 kg
Dimensions 10 × 10 × 5 cm


Kits from QRP-Labs