YY1090A 5in1 PH Salinity Temperature TDS EC Backlight PH Simultaneous Display Function Green Screen Rechargeable Version

YY‑1090A 5‑in‑1 Water Quality Tester Pen

This multi‑functional digital water tester can simultaneously measure pH, Salinity, Temperature, TDS and EC. It features a green backlit LCD screen with pH simultaneous display function, allowing you to view multiple sets of data at a glance even in dim lighting conditions.

Built‑in ATC automatic temperature compensation effectively reduces measurement errors caused by temperature fluctuations. With IP67 waterproof housing, the pen supports in‑water testing and is easy to clean after use.

Adopted USB rechargeable design, no disposable battery replacement required for long‑term repeated use. It supports manual calibration and comes with pH calibration powder to ensure reliable test results. Auto shut‑off after 5‑minutes of inactivity helps save power and extend standby time.

Specifications

• PH: Range: 0.0‑14.0pH; Resolution: 0.1pH; Accuracy: ±0.1pH
• TDS: Range: 0‑999ppm, 1000‑9990ppm, 10.1‑100.0ppt; Resolution: 1ppm, 10ppm, 0.1ppt; Accuracy: ±2% F.S
• EC: Range: 0.01‑20.00mS/cm, 20.0‑200.0mS/cm; Resolution: 0.01mS/cm, 0.1mS/cm; Accuracy: ±2% F.S
• SALT: Range: 0‑9990ppm, 10.1‑100.0ppt; Resolution: 1ppm, 0.1ppt; Accuracy: ±2% F.S
• TEMP: Range: 0.0℃‑50.0℃ (32.0℉‑122℉); Resolution: 0.1℃, 0.1℉; Accuracy: ±0.5℃, ±1℉
• Waterproof: IP67
• Size: 1834545mm
• Display: LCD Backlit Display
• ATC: 0.0℃‑50.0℃ (32.0℉‑122℉)
• Power Supply: USB Charging
• Auto Shut‑off: 5 minutes

Compact handheld dimension makes it easy to carry and store. Widely applied for drinking water, aquarium fish tanks, swimming pools, spa, hydroponics and laboratory water‑quality testing.

Bullet Points

✅ 5‑in‑1 multi‑parameter tester: detects pH, Salinity, TDS, EC and Temperature

✅ Green backlit LCD screen with pH simultaneous display for clear reading in low‑light environment

✅ Built‑in ATC automatic temperature compensation improves testing accuracy

✅ IP67 waterproof rating, supports immersion testing and simple cleaning

✅ USB rechargeable, no frequent battery replacement

✅ Manual calibration supported, equipped with pH calibration powder

✅ 5‑minute auto power‑off for energy saving

✅ Portable pen‑shaped design for home, outdoor and laboratory use

✅ Ideal for aquarium, pool, spa, drinking water and hydroponics water monitoring