Features: This meter monitors tank liquid depth level, and displays on a 10-elements LCD bar graph It can keep min/max records of tank liquid level Supports tank liquid level high/low alarm and tank liquid empty alert Displays indoor temperature ( or ) and tank temperature ( or ) at the same time The receiver can be put standing on desk or hanging on wall. Specification: Transmission distance: max.100 meters( in open space) Frequency: 433MHz Indoor temperature range: -50-0 Resolution: 1 Accuracy: 1 Tank temperature measure range: -40~-60 Resolution: 1 Accuracy: 1 Water level measure range: 0-15m Resolution: 0.01m Accuracy: 0.03m Alarm duration: 120sec Power consumption: Indoor receiver: 2xAA 1.5V batteries(without) Tank transmitter: 6xAAA 1.5V batteries(without) Material: plastic colour: White+black Package Contents: 1 x transmitter 1 x receiver 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: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!