Check the listing for details. EXTRON PRIORITY PAGE SENSOR KIT 70-619-01, CABLE AND BOX ONLY! FOR PPS 25 SENSOR. Condition: New. Listed at 13.99 USD. The PPS 25 Priority Page Sensor works with Extron Classroom AV Systems to automatically mute classroom audio during an announcement from a public address system. The sensor connects to a PA speaker lead and detects current flow, signaling the switcher to mute classroom audio for the duration of the announcement. The PPS 25 is compatible with PVS 305SA IP, PVS 405D and PVS 407D PoleVault switchers.Note: The PPS 25 must be installed in a sealed enclosure, such as the included metal junction box to meet the UL 2043 plenum rating requirement. Return Policy:Must be returned within 30 days in same condition as sold. Buyer is responsible for return shipping. If item was "Free shipping" actual cost of shipping will be deducted from refund.If there is an issue with a product, please contact me immediately for a resolution. International bids only accepted if eBay's Global Shipping Program is used. Buyer is responsible for any taxes, fees, tariffs or duties associated with this purchase. Contact eBay for further details.Shipping rates are for the continental US only. Alaska and Hawaii please check for shipping rates.Thanks for looking