Abstract: An electric fence monitor and alarm apparatus and method is provided in which the charge condition of an electric security fence is continuously monitored, and an indication is provided when the charge on the electric fence falls below a pre-determined level. In a preferred embodiment, the charge on the line causes a circuit to be maintained in an energized condition which maintains a relay or other switch means in a first condition preventing the energization of indicator means or alarm means such as sirens, automatic telephone dialers, horns and bells. When the charge on the line falls below a pre-determined level, the relay or other switch means is switched to a second state, after a pre-determined adjustable time delay, to cause the operation of the indicator, thereby alerting the proper personnel to a failure of the charge on the line for any reason. The failure of the charge on the line is often caused by an unauthorized cutting of the line.

Abstract: A versatile standoff insulator for mounting on chain link fences and elsewhere is comprised of first and second shaped insulating members having grooves or passageways between the insulating members for mounting to the links of the fence or other object. The same structure may be mounted directly onto surfaces by conventional fastening means such as nails and screws. The standoff element is provided with a grommet to prevent the wire from wearing and breaking at the suspension points.