SM1/TRM1 TDS Meter Inline Digital Water Tester Salinity DO Monitor Aquarium Lab
Monitors TDS levels in single or triple water lines. Easy inline installation withMur-lok® Quick-Connect fittings. Auto-off function after 10 minutes to save battery. Size: 7.6 × 2 × 4.7 cm. Wide range:0–9990 ppm with dual-resolution display.