1. Real Time Data Transmit: The product is for Tuya APP, compatible for IOS for Android mobile phones, phones and devices can transmit real time data within 10 meters. 2. Rational Design: The product instrument in the case of no operation, disconnect Bluetooth, 8 minutes automatic power off, when the instrument is needed to test, open the Bluetooth system automatic connection, better humanized. 3. Support Language: Language support Chinese, Traditional Chinese, English, French, German, Russian, Japanese, Korean, Spanish. 4. Data Export Function: PH support 6.86 4.01 9.18 7.00 4.00 10.00. Two correction modes. Support email data export every hour, daily, weekly, and monthly. 5. 5 in 1 Function Test: Supporting test EC TDS SALT SG TEMP value, 5 in 1 water quality test pen, meets your daily testing needs and provides you with convenience. 2 in 1 Function Detection: PH TEMP value 2 in 1 function detection, to meet your different detection needs, is a very practical function. Specification: Item Type: 5 in 1 Water Tester Material: ABS Product Size: 32.5 x 3.5 x 2cm/12.6 x 1.4 x 0.8in Battery: 1 x 6F22 9V battery Scope: EC: 0-19900us/cm, 0-199.0 ms/cm TDS: 0-19900ppm, 0-199.0ppt SALT: 0-199.0ppt, 0%-20% S.G: 1.000-1400 Temperature: 0-50℃ (32-122℉) System: for Tuya APP for IOS for Android phones Color: green Material: ABS Package Contents: 1X Water Quality Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.