DSC-WS4904P Please log in to see price or purchase this item Quantity discounts available QuantityPrice SKU: DSC-WS4904P MANUFACTURER: DSC Product Details 433MHz wireless passive infrared motion detector with pet immunity up to 60 lbs (27 kg) and lithium batteries. Product Details Back Product Details433MHz wireless passive infrared motion detector with pet immunity up to 60 lbs (27 kg) and lithium batteries.