A method, system, and apparatus for security and monitoring are disclosed. In one embodiment, a small device with five sensors (temperature, light, motion, accelerometer, sound) includes a processor, local data storage, and WiFi and Bluetooth communication capabilities. The device may collect data through its sensors and may store such data on its local storage and/or may transmit such data to a remote monitoring server over WiFi (to a local router first over WiFi) and may also transmit data to a mobile device over Bluetooth. The mobile device and remote monitoring server may also configure the device. The device includes a power management scheme including heartbeats and minimized sampling rates.