Commercial 81T 81T201SP Electronic Exposed Water Closet Flush Valve with Mechanical Manual Override - Solar OperatedElectronic Exposed Water Closet Flush Valve with Mechanical Manual Override Solar Operated Solar flush valve for 1 1 2" top spud water closet with sensor on valve maximum 11 1 2" or 11 3 4" height EZ Adjust system allows flush volume adjustments with a simple turn of a screw Mechanical manual override button Scratch resistant lens window Designed for indoor lighting conditions and will operate in high or low brightness levels Advanced infrared sensor