Am looking to buy some pet ally lenses #5 for Visonic MR4000 PIR's. ADI says they were disontinued several years ago. The manufacturer's sales department also said the same.The MR4000 is still available. Appreciate your help. Am removing some 903"s; could have been part #DS-903, an early model PIR that would trip when the wind blew, when installed in an outside wall, due to the Venturi effect .
Charlie