FOR SALE IS ONE (1) NEW WIRELESS SECURITY ALERT SYSTEM BY BUNKER HILL UPC# 792363930680 or 792363619103. THIS TWO PIECE WIRELESS ALERT SYSTEM PROVIDES PEACE OF MIND AND AWARENESS IN A SIMPLE KIT. THE POWERFUL INDOOR or OUTDOOR WEATHER PROOF PASSIVE INFRARED SENSOR (pir sensor) WILL DETECT MOTION AND SENDS A SIGNAL TO THE INDOOR WIRELESS RECEIVER. WORKS ON THE SAME MOTION SENSOR PIR TECHNOLOGY AS MOTION ACTIVATED OUTDOOR SECURITY LIGHTS. THE WIRELESS RECEIVER IN YOUR HOME WILL CHIME WHEN THE PASSIVE INFRARED SENSOR (pir sensor) DETECTS MOTION WITHIN 30 feet WITHIN A 40 degree field. THE MOTION ACTIVATED PIR SENSOR CAN MOUNT IN YOUR DRIVEWAY, BACKYARD, ON A FENCE POST OR WALL, AROUND POOL AREA, BASEMENT, GARAGE, TOOL SHED, KITCHEN COUNTER NEAR THE COFFEE MAKER, ETC. USE THIS IN YOUR RETAIL ENVIRONMENT TO CHIME WHEN A CUSTOMER ENTERS THE STORE. ONE CUSTOMER MOUNTED THE SENSOR NEAR HIS MAILBOX TO ALERT HIM TO A MAIL DELIVERY. THE WIRELESS RECEIVER IS MOBILE, ALLOWING YOU TO MOVE IT ROOM TO ROOM WITH YOU. KEEP THE KIDS SAFE OR USE THIS TO SECURE YOUR TEENAGER IN THE HOUSE, ALERTING YOU TO LATE NIGHT TEENAGE JUVENILE SHENANIGANS. NOW YOU CAN KNOW TO EXPECT A KNOCK ON THE DOOR OR UNEXPECTED VISITOR WHEN THEY ACTIVATE THE SENSOR, WHEN YOU HEAR THE PLEASANT CHIME. EASY TO INSTALL AND INCLUDES ALL MOUNTING HARDWARE. REQUIRES ONE (1) NINE VOLT BATTERY AND THREE (3) C BATTERIES, NOT INCLUDED. YOU WILL RECEIVE ONE (1) WIRELESS SECURITY ALERT SYSTEM BY BUNKER HILL SECURITY SHIPPED BY USPS..... wireless security alert system by bunker hill specifications, sensor range: 30 feet within a 40 degree field radio range: approximately 400 feet radio frequency: 433 MHz two piece kit, pir motions sensor and wireless receiver for indoors with pleasant chime sound BID AND BUY HERE IN IN ABSOLUTE CONFIDENCE SINCE I HAVE THOUSANDS OF POSITIVE FEEDBACK AND TEN+ YEARS EXPERIENCE. I SHIP WITHIN TWO DAYS OF RECEIPT OF PAYMENT, OFTEN THE NEXT DAY. $4.81 USPS GREEN SHIPPING USING RECYCLED PACKAGING MATERIALS AND ENVIRONMENTALLY FRIENDLY MATERIALS TO ANYWHERE USA. I DO NOT SHIP ANYWHERE ELSE. HAVE A GREAT DAY AND THANK YOU FOR STOPPING BY.......