Spec Sheet Preview: The Alpha Communications® / TekTone NC500ESSK is a portable, easy-to-use site survey kit that takes the guesswork out of creating a wireless installation plan with a quick and accurate site survey. The NC500ESSK is used to determine the optimum location for transmitters and repeaters in a TekCARE®500 (TC500) Wireless Emergency Call System. The NC500ESSK demonstrates the superior range, performance and reliability in virtually any environment. The NC500ESSK is powered by a rechargeable battery and is complete portable.