Kit makes 5 LEDs light up when the telephone rings. Uses Power from phone circuit

Kit makes a transmiiter to transmit telephone call on FM 88- 108 Mhz. Uses Power from phone circuit

Kit makes an LED light up when the telephone is in use. Uses Power from phone circuit

Kit makes an 8 input 5-15 VDC output driver circuit to enable the FK type LED kits to drive higher loads, such as light bulbs or relays. each output can drive up to 500ma. You can also combine outputs to drive higher loads

Kit makes an Electronic Code Switch to Control devices from 1-220 Volts AC or DC by entering a code preset by the user. Lock out unauthorized users from your trains and / or equipment

Kit makes a circuit to make sound effects to simulate a Child Laughing. Comes Complete with 2" speaker.

Kit makes a 10 LED wheel that works somewhat like a Vegas Roulette wheel and even has sound

Kit makes a 36 LED wheel that works somewhat like a Vegas Roulette wheel and even has sound

Kit makes a small FM wireles transmitter that can be used to demonstrate wireless microphone principles. Single Stage low power. Includes Microphone

Kit makes a multi function adjustable timer switch circuit. 0-3 hours Control devices from 1-220 Volts AC or DC

Kit makes a DC Step Down voltage coverter from 12-15 volts to 6 or 9 volts DC

Kit makes an Infrared Sensor that can detect people & animals from up to 18 feet away