Alerts you when a vehicle is coming up your driveway;Indoor voice receiver sounds a programmable voice message when a vehicle approaches;Sensor is solar powered (includes 2 AA NiMH rechargeable batteries);Operates up to 1000' (line of sight);One year warranty from the date of original purchase

• Safety Technology International, Inc.STI-V34100 Wireless Solar Powered Driveway Monitor with Voice Receiver

Safety Technology International, Inc.STI-V34100 Wireless Solar Powered Driveway Monitor with Voice ReceiverSafety Technology International, Inc