Check the listing for details. Knock Knock Wireless Door Chime with Vibration Smart Sensor. Condition: New. Listed at 10.99 USD. Have a hard time hearing when guests arrive because you just can't hear them knocking? Change all that with the Knock Knock Wireless Door Chime. This sensor and receiver set automatically chimes when someone is knocking at your door, alerting you to their arrival. To use, simply attach the sensor to the door using either double sided tape or screws. The sensor will then activate whenever it feels a knocking vibration. The receiver, which has a 100ft connectivity, will then chime in order to alert you to guests! Now you'll never miss another visitor, even if you're all the way in the back of your home or office. About Us Payment Info Shipping Info Customer Support Feedback Knock Knock Wireless Door Chime with Vibration Smart Sensor --> Product Details--> Brand: STI UPC: 0662950300922 Mfr Part #: STI30092 Item SKU: 0662950300922 --> Be alerted to visitors no matter where you are in the house Product Information Have a hard time hearing when guests arrive because you just can't hear them knocking? Change all that with the Knock Knock Wireless Door Chime. This sensor and receiver set automatically chimes when someone is knocking at your door, alerting you to their arrival. To use, simply attach the sensor to the door using either double sided tape or screws. The sensor will then activate whenever it feels a knocking vibration. The receiver, which has a 100ft connectivity, will then chime in order to alert you to guests! Now you'll never miss another visitor, even if you're all the way in the back of your home or office. Product Features Wireless sensor and receiver set automatically chimes when someone is knocking on the door Wireless receiver makes it easy to hear when guests arrive while in the back part of an office, home, or basement The smart sensor is only activated by a knocking vibration Wireless transmission allows the receiver to be placed anywhere in house or office, up to 100 feet from transmitter Easily mount sensor on inside of door with double-sided tape or screws provided Included Receiver Sensor 23A Battery Note: Battery is included, but not guaranteed. Specifications Color: White Operating Distance: 100 ft. Sensor Power Source: 1 x 23A battery (included) Receiver Power Source: 3 "C" cell batteries (not included) Warranty: One Year Limited Manufacturer Warranty Store Policies Welcome to the NothingButSavings eBay Store! To make your purchase as easy as possible, NothingButSavings requires payment via PayPal at the time of purchase. We have outlined all of our store policies below, however if you have any questions, please do not hesitate to contact us at any time. Check-Out Now! Click the Pay Now button at the top of this listing to immediately proceed with our checkout and payment process. Please note that the Pay Now button is ONLY available after winning an auction or completing a Buy It Now purchase. Sales Tax Sales tax is applied for shipments to addresses in applicable States where we are required by law to collect and remit sales tax. Purchases are not tax-exempt merely because we are not required to collect a State's Sales Tax. Your State may require you to pay use tax on your purchase. For more information, please visit your State's Department of Revenue or Sales and Use Tax website. Shipping For security purposes, NothingButSavings will only ship to the address provided by eBay at the time of the order. If for any reason this address is incorrect, please contact us as soon as possible to see if other arrangements can be made. NothingButSavings accepts no responsibility for incorrect delivery information contained in your eBay account at the time of purchase. Customer Service If you need to reach us at any time please click here. Order Status Customer Service (or by phone: 800.755.4619) Technical Support Product Information -->