A system comprising: a wetness sensing device configured to wirelessly transmit information associated with an absence of a liquid or a presence of a liquid; and a hemodialysis machine comprising: a first antenna in communication with a first receiver and a second antenna in communication with a second receiver, the first antenna and the second antenna being configured to: simultaneously wirelessly receive the information; and send the information to the first receiver and the second receiver respectively; wherein the first receiver is configured to generate a first digital signal based on the information and the second receiver is configured to generate a second digital signal based on the information; and a processor configured to: receive the first digital signal and the second digital signal; calculate, based at least in part on the first digital signal, a first corrected digital signal representing an absence of a liquid or a presence of a liquid; and calculate, based at least in part on the second digital signal, a second corrected digital signal representing an absence of a liquid or a presence of a liquid. a wetness sensing device configured to wirelessly transmit information associated with an absence of a liquid or a presence of a liquid; and a hemodialysis machine comprising: a first antenna in communication with a first receiver and a second antenna in communication with a second receiver, the first antenna and the second antenna being configured to: simultaneously wirelessly receive the information; and send the information to the first receiver and the second receiver respectively; wherein the first receiver is configured to generate a first digital signal based on the information and the second receiver is configured to generate a second digital signal based on the information; and a processor configured to: receive the first digital signal and the second digital signal; calculate, based at least in part on the first digital signal, a first corrected digital signal representing an absence of a liquid or a presence of a liquid; and calculate, based at least in part on the second digital signal, a second corrected digital signal representing an absence of a liquid or a presence of a liquid. a first antenna in communication with a first receiver and a second antenna in communication with a second receiver, the first antenna and the second antenna being configured to: simultaneously wirelessly receive the information; and send the information to the first receiver and the second receiver respectively; wherein the first receiver is configured to generate a first digital signal based on the information and the second receiver is configured to generate a second digital signal based on the information; and simultaneously wirelessly receive the information; and send the information to the first receiver and the second receiver respectively; a processor configured to: receive the first digital signal and the second digital signal; calculate, based at least in part on the first digital signal, a first corrected digital signal representing an absence of a liquid or a presence of a liquid; and calculate, based at least in part on the second digital signal, a second corrected digital signal representing an absence of a liquid or a presence of a liquid. receive the first digital signal and the second digital signal; calculate, based at least in part on the first digital signal, a first corrected digital signal representing an absence of a liquid or a presence of a liquid; and calculate, based at least in part on the second digital signal, a second corrected digital signal representing an absence of a liquid or a presence of a liquid.