1. This 6-in-1 WIFI PH//TDS/SALT/S.G./Temp controller and monitor, simultaneously measures and displays both pH value and The data of any one of /TDS/SALT/S.G./Temp, the mode can be switched2. It comes with 2 BNC electrodes (one for pH and one for TDS SALT S.G), 1 temperature probe, and 1 output power socket. Both electrodes are detachable, they can be replaced easily at any time.3. As for the relay output power sockets, you can plug in your own 110V/ 220V device to it.4. The device can be connected to WiFi, download the Tuya Smart APP, and view the current data and historical data on the mobile phone, alarm of abnormally high and low data, etc.5. Wide range of applications can be used for including drinking water, swimming pool, pond, aquariums, hydroponics, laboratory, food processing, etc.Specifications:Range:pH 0.00-14.00pH:0-19000us/cm,0-199.0ms/cmTDS:0-19990ppm,0-199.0pptSALT:0-199.9ppt,0%-20%SG:0.990-1.400Temp:0-50 (32-122)Resolution:pH:0.01PH:1us/cm ( less than 1000us/cm),10us/cm ( more than 1000us/cm),0.1ms/cmTDS:1ppm( less than 1000ppm),10ppm ( more than 1000ppm),0.1pptSALT:1ppm(1000ppm),10pm( more than 1000pm),0.1ppt,0.01%S.G:0.001Temp:0.1(0.2)Accuracy:pH:+0.03, TDS, SALT: +/- 2%F.STemp: +/- 1.0C Power supply: DC6VTemperature Compensation: 0C-50COperating Temperature: 0-50CWeight: 200g(Without packaging and add-ons)Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on.Colour: White+GreenMaterial: plasticSize: about 130 x 77cmPackage Contents:1 set x 6-in-1 Multifunction Smart MonitorOnly the above package content, other products are not included.Note: Light 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.