No. Due to the changes in the design of the housing, we do not recommend using the new accessory kit with the older style breaker finder kits. The CS61200 transmitter that plugs into the accessory kit has a different molding shape and it clicks into the accessory adaptor. The older kits have a flat front to them that will not fully sit in the accessory kit. This will leave parts of the metal prongs for the transmitter exposed and could potentially cause a shock hazard for the user. The accessory kit for the older breaker finder kits has been discontinued with no replacement.