Enowelir 3800W 2-Channel 12V Car Stereo Amplifier, Black Aluminum Alloy Housing

Package size: 21.6 x 16.5 x 11.1 cm; 250 g. The complete, improved G52 safety valve kit includes a G54 housing and an internal speed control timer. It activates if the robot vacuum gets stuck on an obstacle or edge and has difficulty turning, or if the water flow from the nozzle stops while the emergency valve is still open. (HIGH COMPATIBILITY): The replacement emergency valve kit is a perfect fit for the Zodiac Polaris models 180, 380, 280, 480 PRO, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, and 280. (EASY INSTALLATION): The G52 emergency valve is ready to use right out of the box and opens every 3 minutes for 30 seconds to flush out cleaning solution by reversing the cleaning direction. The valve can also free the device from tight spaces if it gets stuck.