A system , comprising: a battery powered wireless alert device (304 1 , ...,304 j , ..., 304 N ), comprising: electronic circuitry (202 1 ); a first transmitter (204 1 ) configured to transmit a health status signal, periodically at a predetermined first rate, to an alarm device , wherein the health status signal is indicative of a health state of the battery powered wireless alert device; a logic circuit (402 1 ) configured to generate an output signal including a logic level that toggles between two states at a predetermined second rate, wherein the first rate is lower than the second rate; and a power source configured to supply power to at least the electronic circuitry and the logic circuit; and a battery powered wireless alert device monitor (306 1 , ...,306 j , ..., 306 N ), comprising: monitoring circuitry (404 1 ) configured to monitor a health state of the battery powered wireless alert device based on the rate of toggling between the two states of the logic level of the output signal of the logic circuit; and a second transmitter configured to transmit a battery powered wireless alert device failure signal, on-demand, to the alarm device in response to the monitoring circuitry determining the logic level fails to toggle between the two states at the predetermined second rate. a battery powered wireless alert device (304 1 , ...,304 j , ..., 304 N ), comprising: electronic circuitry (202 1 ); a first transmitter (204 1 ) configured to transmit a health status signal, periodically at a predetermined first rate, to an alarm device , wherein the health status signal is indicative of a health state of the battery powered wireless alert device; a logic circuit (402 1 ) configured to generate an output signal including a logic level that toggles between two states at a predetermined second rate, wherein the first rate is lower than the second rate; and a power source configured to supply power to at least the electronic circuitry and the logic circuit; and electronic circuitry (202 1 ); a first transmitter (204 1 ) configured to transmit a health status signal, periodically at a predetermined first rate, to an alarm device , wherein the health status signal is indicative of a health state of the battery powered wireless alert device; a logic circuit (402 1 ) configured to generate an output signal including a logic level that toggles between two states at a predetermined second rate, wherein the first rate is lower than the second rate; and a power source configured to supply power to at least the electronic circuitry and the logic circuit; and a battery powered wireless alert device monitor (306 1 , ...,306 j , ..., 306 N ), comprising: monitoring circuitry (404 1 ) configured to monitor a health state of the battery powered wireless alert device based on the rate of toggling between the two states of the logic level of the output signal of the logic circuit; and a second transmitter configured to transmit a battery powered wireless alert device failure signal, on-demand, to the alarm device in response to the monitoring circuitry determining the logic level fails to toggle between the two states at the predetermined second rate. monitoring circuitry (404 1 ) configured to monitor a health state of the battery powered wireless alert device based on the rate of toggling between the two states of the logic level of the output signal of the logic circuit; and a second transmitter configured to transmit a battery powered wireless alert device failure signal, on-demand, to the alarm device in response to the monitoring circuitry determining the logic level fails to toggle between the two states at the predetermined second rate. <EOS>