High Tech Pet Sound Barrier Extra Receiver SBR-1 Product Details Product Dimensions: 12 x 9 x 4 inches Shipping Weight: 4.8 ounces Domestic Shipping: Item can be shipped within U.S. Item model number: SBR-1 Expands your Sound Barrier Indoor Sonic Dog and Cat Fence SB-1 to protect multiple areas Uses sound, not shock, to deter pets Alarm is triggered only by your pet's individual electronic transmitting collar, allowing people to come and go without triggering the alarm Requires transmitter collar model MS-2 (included with Sound Barrier Indoor Sonic Dog and Cat Fence SB-1), MS-2A or RX-10 Requires one 9-volt alkaline battery (not included) Extra receiver module for Sound Barrier Indoor Sonic Dog and Cat Fence. Wantto restrict several different areas at once? Keep Fido out of the trash, offthe couch and away from kitty's food all at the same time. Place a SBR-1receiver in each restricted area. Requires transmitter collar model MS-2, MS-2A or RX-10. Requires one 9-volt alkaline battery (not included). 1,RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk.rp73%28b0g%60%60%3E1-154c3d4d7ee-0x10a-->