Wireless Driveway Alert System - Battery Operated - Detects Vehicles and People up to 400 Feet Away Build a waterwheel

Build a waterwheel

and experimentation

The new generation H-Racer is an amazing way to demonstrate cutting edge alternative energy and automotive technologies

You can create more complex programs using the open source visual block programming editor "Google blocks" On a PC with a USB connection to the core controller

The STANLEY 46-012 12" Plastic Handle Combination Square is an easy-to-use layout tool

Wireless Driveway Alert System - Battery Operated - Detects Vehicles and People up to 400 Feet Away Build a waterwheelWireless infrared alert system Detects vehicles and people up to 200 feet away Receiver chimes when sensor is crossed Easy, wireless installation and mounting hardware is included NOTE: Not weather resistant. Please mount sensor where it will not get wet. Don't be caught off guard The Electronix Express Wireless Driveway Alert and Alarm System warns you that visitors are on their way to your door. This driveway alert system uses a wireless receiver in