Security devices and associated methods have a housing, a camera with a field of view of a monitored area outside the housing, a microphone to sense audio from the monitored area, a speaker to generate sound audible to the monitored area, an illumination source to illuminate the monitored area, a communication module to communicate with a communication network, a motion sensor to detect motion within the monitored area, at least two removable battery casings, each configured via a release button to hold at least one battery within the housing, and a control circuit that, when the motion sensor detects motion, is operable to (a) activate the illumination source, (b) capture video and audio from the camera and the microphone, and (c) send the captured video and audio to a remote server via the communication module and the communication network.