Photo 1 of Yewhick Smart Pool Chlorine Tester with Gateway, WiFi pH and Pool Salt Tester for Swimming Pool, 7 in 1 Chlorine Salinity ORP Monitor for Aquarium Sodium Chloride Swimming Pools Hot Tub Spas

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Photo 1 of Yewhick Smart Pool Chlorine Tester with Gateway, WiFi pH and Pool Salt Tester for Swimming Pool, 7 in 1 Chlorine Salinity ORP Monitor for Aquarium Sodium Chloride Swimming Pools Hot Tub SpasPhoto 2 of Yewhick Smart Pool Chlorine Tester with Gateway, WiFi pH and Pool Salt Tester for Swimming Pool, 7 in 1 Chlorine Salinity ORP Monitor for Aquarium Sodium Chloride Swimming Pools Hot Tub Spas