Check the listing for details. Wheelock Common Audible Control Unit CA-622-1 Phone Notification Up to 6 lines. Color: Beige, Condition: New. Listed at 199.95 USD. Wheelock Wheelock Common Audible Control Unit CA-622-1 Wheelock Series CA Common Audible Control Units monitor multiple analog telephone lines (tip and ring) to provide all call signaling, zoned signaling or night bell connection. These control units also enable connection for operation of external audible or visual alerts to be operated directly off the telephone ring voltage output. The CA-622-1 Common Audible Control Unit can monitor up to six telephone lines to provide "all-call" signaling. Two separate zones can be signaled and two or more control units can be ganged to monitor additional input lines. This interface product is especially useful for new electronic key systems that do not offer a common audible ring circuits for night bell connection or zoned ringing. A choice of two outputs for connection of alert signals is provided: standard ringing voltage output or dry contact closure. A wide selection of audible and visual alert signals is available to operate directly off the ringing voltage output. Alternatively, Wheelock's Dry Contact Interface (Model DCI 24-24) can be connected to the optional contact closure output to drive multiple 24VDC alert signals. SPECIFICATIONS: Signal Input Quantity From 1 to 6 Incoming C.O. Lines Signal Input 55-130VAC Signal Input Frequency 20-30Hz Signal Output 90/20 Incoming Signal Contact Output A Dry Contact rated at 2 Amps, @ 24VDC Expansion Units are gangable Ringer Equivalence 1.0 A Signaling Zones 1 or 2 Dimensions 7-1/4" X 5" X 2" Your satisfaction is guaranteed. If the item you purchased does not meet your expectations or needs, please contact us. If the item is returned in the same condition, we sent it in, and within 14 days, we will refund your purchase price less shipping & handling costs. If we made a mistake, then the S&H is on us. Buy with confidence and best wishes! We Combine Shipping! Please request an invoice before paying if combining with items from our other listings. The United States Postal Service (USPS) will no longer run traces on packages shipped by First Class Mail International or Priority Mail International after they leave the United States. True tracking is only available on Express Mail International which is in most cases is more than double the shipping cost. We provide our best efforts to keep shipping & handling costs reasonable for international eBay shoppers. If you choose Economy International Shipping it may be between 5 to 15 business days and in some cases even longer and regretfully not possible to trace. USPS Express Mail International is at a considerably higher cost but is traceable and generally is delivered within 3 to 10 business days.