Resonators are frequency-selective electronic circuits that can produce a fixed (resonant) frequency when properly excited.

Oscillators are devices that are used to generate repetitive signals.

Fiber optic connectors are used to align and join two or more fibers together to provide a means for attaching to, or decoupling from, a transmitter, receiver, or other fiber optic device.

Military (MIL-SPEC) connectors are built in accordance with military specifications.

Fire, police and military equipment is designed for fire, military, security and police applications

Fiber optic attenuators are devices that reduce signal power in fiber optic links by inducing a fixed or variable loss.

Switch boots protect switches from contaminants such as dirt, dust, gas, and liquids.