Retekess T111,T112 Single Buzzer,Lanyard Hole Design,3 Pompt Modes,Change Label Paper,Long Range,Rechargeable Pager for Restaurant,Nursery,Hospital,Church,Food Truck auspowers_batchthree *** Works ONLY for Salt

*** Works ONLY for Salt Water Pool and Koi Fish Pond Salt level testing

Cord Length: 4ft(48 inch)

if you do not confirm the needle works please consult with us before order

Material : Durable ABS + Top crystal

Retekess T111,T112 Single Buzzer,Lanyard Hole Design,3 Pompt Modes,Change Label Paper,Long Range,Rechargeable Pager for Restaurant,Nursery,Hospital,Church,Food Truck auspowers_batchthree *** Works ONLY for SaltRetekess T111,T112 Single Buzzer,Lanyard Hole Design,3 Pompt Modes,Change Label Paper,Long Range,Rechargeable Pager for Restaurant,Nursery,Hospital,Church,Food Truck Read more Wireless transmission Wireless technology, no need to use WiFiThe signal range can reach 1640ft at open area Signal indicator Blue light flashes when charging, blue light is always on when charge finish. Red flash slowly in standby state, red light flashes quickly when the