A monitoring system may include a module configured to couple to a base. The module may include a memory configured to store a firmware application and data, a processor operably coupled to the memory and configured to execute firmware to control the monitoring system, a wireless communication transceiver configured to allow communications between the module and other modules external to the monitoring system, and at least one sensor. The monitoring system is operable to monitor data measured via the at least one sensor and provide monitoring and alarm functions. The module is replaceable separately from the base, which has a shape generally resembling a safety cone.