This is high quality wire sold by the foot. Great for hooking up sensors and electronics that are sensitive to electrical noise and interference. The Aluminum foil shielding provides protection for power frequency and radio frequency interference.
This is the waterproof inspection LT2 Robot. It has flipper arms to help it climb obstacles and for better maneuverability. It is capable of wireless or tethered control. The tethered option includes a fiber-optic cable spool up to 1km long.
Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor.