Abstract: An optoelectronic transceiver is provided having an adaptable logic level signal detect output. The preferred embodiments are configured to generate various logic level signal detected signals directly for use by the transceiver host device. A first embodiment generates the SD output based on the actual optical power received over the optical transfer medium. When the received optical power exceeds a predetermined threshold, the monitor voltage exceeds the reference voltage, and the signal detected output is set. The output stage of the circuit can be configured such that in the true state, meaning a signal has been detected, a TTL level signal, a CMOS signal, or a high voltage or high current signal is set to true. The high voltage and high current configurations may be set to any value required under the specific requirements of the application. In a second embodiment an AC signal detecting circuit generates the SD output.