Safety processor 430 can be similar to safety processor 230 of FIG. 2. Safety processor 430 can operate sensor state machines 432, alarm thresholds 433, trigger module 436, and sensor log 438. Safety processor 430 can control operation of LEDs 442 and alarm 444. Safety processor 430 can receive data values acquired by sensors 422-427 and button 440. All or a portion of acquired sensor data can be provided to sensor state machines 432. For example, as illustrated in FIG. 4, smoke, CO, and heat sensor data is shown being directly provided to sensor state machines 432. Sensor log 438 can store chunks of acquired data that can be provided to system processor 402 on a periodic basis or in response to an event such as a state change in one of sensor state machines 432 or a trigger event detected by trigger module 436. In addition, in some embodiments, even though the sensor data may be stored in sensor log 438, it can also be provided directly to system processor 402, as shown in FIG. 4.
