BTC 2003rf User Guide

11. Keep all items away from direct sunlight, moisture, dirt, extreme heat and

abrasive chemical (cleaning) solutions.

12. Should the receiver, the keyboard or mouse become accidentally

immersed or splashed by liquids, switch off your PC immediately, unplug
all items and refer to your dealer for further assistance. In these cases
please refrain from using any of the items before consulting with your
dealer!

If above troubleshooting suggestions still do not solve your problem then
please refer to your direct dealer for technical support.