JSN-SR04T-V3.0 ultrasonic ranging module can provide 21cm-600cm non- distance sensing function, ranging accuracy can reach 3mm This product adopts industrial-grade integrated ultrasonic probe design, waterproof type, can be used in humid and harsh environments, and has stable performance. JSN-SR04T-V3.0 is updated to version 3.0, which solves the problem of blind spot data jump and improves the stability of the product. The module consists of an ultrasonic sensor and a control circuit including a transceiver, and is compatible with all MCUs on the market. DC3.0-5.5V power supply range is wide, low power consumption, 6 working modes for customers to choose Colour:blue Material:PCB Package Contents: 2 x Ultrasonic Distance Measuring Module 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.