Monitoring system, apparatus and method

A modular sensor apparatus for communicating sensor data with a portable electronic device, the sensor data being associated with an environment including a door having a strike plate, the modular sensor apparatus comprising:

• a door monitor system configured to be attached to the door, and having a striker with one or more electrical connectors that, when in physical contact with the strike plate, indicate a strike event, the door monitor system further including an electronic sensor;
• a first wireless communication module, the first wireless communication module including a first transceiver employing a first protocol to receive digital data from the electronic sensor and to control the electronic sensor;
• an memory connected with the first wireless communication module, and storing the digital data received from the electronic sensor;
• and
• a second wireless communication module, the second wireless communication module including a second transceiver employing a second protocol different from the first protocol to communicate, based on the strike event, real time electronic sensor data and at least some of the digital data stored in the memory directly with the portable electronic device.