With display and probe distances of up to 980 feet. You can place the display in your living room or bedroom to check the indicators of your pool water. Save time and effort with our 4-in-1 monitoring system, which measures pH, EC, TDS, and temperature of any swimming pool or spa. Perfect for in-ground or above-ground pools and hot tubs. Our probes have been continually enhanced to deliver precise and stable data on swimming pool water quality (Please to replace the protective caps from probes before use). The pool water quality monitor's probe boasts an IP68 waterproof rating, ensuring it can be fully submerged in water for long periods (tighten cover as per instructions). Note that the display is not waterproof, so keep it away from water! The display requires a USB Typec-c cable. The Probe needs 3 * AAA batteries (Battery not included) for 1-3 months, the battery level of the probe is shown in the upper right corner of the display. Color: As Shown Material: plastic Package Contents: 1 * pool chemical monitor 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.