AKC GUIDELINES AKC EQUIPMENT SPECIFICATIONS FOR ELECTRONIC TIMERS: The Electronic Timer System must be capable of operating in bright sunshine as well as rain, snow, fog, or dust particles. The electronic transmitter and receiver supports must be constructed so that they do not inhibit the handler or dog's path. The supports may not be taller than 42" (36" or less is recomended). The base that supports the transmitter and receiver may not be wider than a normal wing. The upright supporting the transmitter and receiver may not be wider than 3.5" and the support must be constructed so that the upright and the beam are no more that 4" from the obstacle. It is recommended that the material and color of the upright be similar to those materials normally used in the construction of agility equipment. The objective is to avoid creating the impression of a spread jump. The timers must have re-settable eyes in the event that an eye is tripped prematurely or accidently, and in the event that a start or finish obstacle is to be used more than once on a course. The timers must have a manual override option allowing time to continue. The timers must have the ability to be connected to an external display. The timers must be capable of recording individual times to the nearest 100th of a second. The dog's time is to be recorded on the scribe sheet from the console unit. The width of the interface of the beam is to be expandable to accommodate 4 to 5 foot jump bars and open tunnels. click on "next page" for more guidelines