Easy Operation: Conveniently user-friendly design, ideal for electrical DIY and professional use. Adjustable Sensitivity: Features 6-level sensitivity adjustment, tailoring to diverse leakage scenarios. Visual & Audible Alarm: Level 6 sound and light alarm with LED visual warning for immediate leak detection. Automatic Reset: Automatic reset upon startup, simplifying the detection process. Ut336a/Ut336a Refrigerant Leak Detector/High Sensitivity: Capable of detecting small leaks, ensuring precise diagnostics for refrigeration systems. Power Supply:4 x AA battery (Not included batteries) Color:As Shown Material:plastic Package Contents: 1 * host 1 * sensor probe 1 * manual in Chinese and English 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.