This YU-Lite lithium battery is perfect for the Pyronix Enforcer alarm sounder and keypads. It's 4700mAh capacity delivers consistent high performance and long lasting reliability. Used by security specialists worldwide, these batteries are available to buy individually or in bulk at wholesale trade prices. These batteries have extremely low discharge and so have an excellent shelf life. Features Designed for used with Pyronix wireless security systems High Capacity Long shelf life Original Equipment Quality Available at wholesale trade prices Specification Voltage : 3.7v Capacity : 4700mAh Chemistry : Non-rechargeable Lithium LiMn02 Equivalents CP405050-P2 405050-P2/PYR