A method, comprising: (i) installing a plurality of pest control devices (1110, 1210) each including a respective bait for one or more species of pest, a respective pest sensor (1150, 1250), and respective communication circuitry (1120, 1220) coupled to the respective pest sensor; wherein the communication circuitry of each pest control device comprises a device responsive to a magnetic field to activate the respective communication circuitry, a visual indicator arrangement including at least two light emitting components (1136, 1138), and a controller circuit; and wherein said installing includes activating the respective controller circuit of each of the pest control devices by coupling the respective controller circuit to the respective pest sensor with a corresponding connector; (ii) providing, by way of a magnetic field applied with a magnetic field source external to the pest control device, a stimulus to one of the pest control devices to activate the respective communication circuitry; (iii) in response to the stimulus, receiving status information about the respective pest sensor from the respective communication circuitry of the one of the pest control devices via the respective visual indicator arrangement of the pest control device, the visual indicator arrangement visually indicating a first state of the pest control device by at least intermittently illuminating a first one of the light emitting components, the respective controller circuit being operative to detect a change in status of the respective pest sensor of the pest control device, one or more output signals from the controller circuit being adjusted in response to the change in status, and in response to said adjustment the visual indicator arrangement visually indicating a second state of the pest control device by at least intermittently illuminating a second one of the light emitting components; and (iv) repeating steps (ii) and (iii) for a different one of the pest control devices. (i) installing a plurality of pest control devices (1110, 1210) each including a respective bait for one or more species of pest, a respective pest sensor (1150, 1250), and respective communication circuitry (1120, 1220) coupled to the respective pest sensor; wherein the communication circuitry of each pest control device comprises a device responsive to a magnetic field to activate the respective communication circuitry, a visual indicator arrangement including at least two light emitting components (1136, 1138), and a controller circuit; and wherein said installing includes activating the respective controller circuit of each of the pest control devices by coupling the respective controller circuit to the respective pest sensor with a corresponding connector; (ii) providing, by way of a magnetic field applied with a magnetic field source external to the pest control device, a stimulus to one of the pest control devices to activate the respective communication circuitry; (iii) in response to the stimulus, receiving status information about the respective pest sensor from the respective communication circuitry of the one of the pest control devices via the respective visual indicator arrangement of the pest control device, the visual indicator arrangement visually indicating a first state of the pest control device by at least intermittently illuminating a first one of the light emitting components, the respective controller circuit being operative to detect a change in status of the respective pest sensor of the pest control device, one or more output signals from the controller circuit being adjusted in response to the change in status, and in response to said adjustment the visual indicator arrangement visually indicating a second state of the pest control device by at least intermittently illuminating a second one of the light emitting components; and (iv) repeating steps (ii) and (iii) for a different one of the pest control devices.