It is waterproof both inside and outside the housings of the faucets. Having trouble accessing the batteries means that the chances of opening the compartment are low. Whenever a short circuit occurs, the danger of being electrocuted is zero. Kitchen faucets with touchless sensing use less energy and are difficult to register. If a faucet has problems, users are advised not to open it and attempt to fix it. Rather than calling their respective warranty offices, they should call theirs.