A device adapted to be integrated with a wall hanging for indicating an
off-level condition is provided. The device includes a series electrical
circuit including a power supply and a signal element connected with the
power supply, wherein the signal element is capable of generating a
perceptible output (such as a visible light or audible sound). The device
also includes a level indicating switch connected between the signal
element and electrical ground. The level indicating switch is capable of
connecting the signal element with electrical ground only when the device
is oriented at least at a selected acute angle relative to a
substantially level condition such that the signal element generates the
perceptible output only when the wall hanging is oriented in an off-level
condition.