Plantower laser counter replacements for your PurpleAir sensor These replacement laser counters keep your PurpleAir sensor going strong, with a set for the Flex and Zen, the original Classic, the Classic Plus, and the Touch and PA-I Indoor sensors. Every set is pretested in PurpleAir facilities. Choose the set that matches your sensor below, as each type has its own mounting and connection. Variants Flex and Zen (Pair): Plantower PMS-6003. Fits the PurpleAir Flex and Zen. Classic Plus (Pair): Plantower PMS-5003. Fits the PurpleAir Classic Plus, and any Classic upgraded with the retrofit housing. Classic PA-II (Pair): Plantower PMS-5003. Fits the original PurpleAir Classic (PA-II). THIS WILL NOT WORK FOR THE PA-II-SD. THE RETROFIT KIT IS NEEDED FOR PA-II-SD. Touch and PA-I Indoor (Single): Plantower PMS-1003. Fits the PurpleAir Touch and PA-I Indoor. Have an original PurpleAir Classic (PA-II or PA-II-SD)? Look into the Classic PA-II Retrofit Kit to upgrade your Classic with the Classic Plus easy-access housing.
