Speaker included. LED beat indication. Adjustable volume and beats/minute with potentiometers. On/off switch on board.

Generates 4 different sounds with this simple mini kit WSAH113: police siren, fire brigade, emergency vehicle and laser gun. RV1 adjusts sound pitch. On/off switch and PCB speaker included.

Surprise your friends in the disco. 5 red LEDs. Incorporated microphone. Adjustable sensitivity.

The Velleman MK134 electronics kit, generates the sound of a vintage steam engine. Adjustable 'speed' and volume. great for model railroads, stage shows or as a gadget. With 'steam whistle'-push button.

Stereo audio amplifier boosts sound 50 times. Great for the-hearing impaired (e.g. when watching TV), as a gadget, science project. With volume control and on/off switch.

Sing along to your favourite music, hook-up the unit between your CD player, MD player or any other line-level source on the one hand and your amplifier on the other. RCA (cinch) input and output sockets with 6.35mm microphone jack, fits most microphones. Adjustable microphone level, "vocal reduction"-switch reduces original vocals on most stereo recordings. on/off switch and LED power indicator.

LED's move to the rhythm of the music. Surprise your friends in the disco, incorporated microphone, adjustable sensitivity.

Classic 'Ding Dong' doorbell sound, plays the sound twice when triggered. Housed in an attractive compact facia, speaker is included. The mini kit has an on board push button and connections for external connection.

A compact mini kit which allows you to create delay effects. Can be used for various audio systems, karaoke, P.A. toys, or just for fun. Can be used with its built-in microphone or connected to a conventional sound system via line level signal.

Chirps or glows as long as the sun shines. Realistic cricket chirp, slow fading green led simulates glow-worm.