REVEX (Revex) Wireless Chime XP Series This is a listing for the XP60 sound/shock sensor transmitter. Receivers are listed separately. [Contents] - Transmitter unit - Sensitivity switching switch (Low/Medium/High) [Condition] - This is a used item and has scratches, dirt, and signs of use. - Battery compartment confirmed. - Please check the photos for the exterior condition. [Specifications] - Uses 2 AAA batteries (batteries not included) - Transmits when sound or vibration is detected - Used in combination with REVEX X/XP series receivers * Cannot be used as a standalone transmitter. * Please use this for replacement or expansion if you already own a compatible receiver. Please only purchase if you understand that this is a used item. The last photo is of the package from when it was purchased. The package is not included in this listing. * Please check your profile when sending messages or making a purchase.