Guardkore Push to talk GSM PTT Radios is a state-of-the-art Push to talk (PTT), Smart-PTT, GSM Radios service based on Cellular Networks. Radios rely on GSM, 2G Radio, 3G radio, 4G radios, LTE Radios signal. Our radios will be able to talk to each other without any range restriction, as long there is network coverage. Each Two way Radio works with a SIM card and uses GSM 2G/3G/4G and some models even work with a WiFi signal. This means that our clients don’t need to spend a fortune on expensive radio infra-structures, like repeaters, antennas, or leasing sites. All the network infra-structure is provided by the GSM carrier (Cellular Network) provider like MTN or Vodacom. Best two way radios in South Africa Real-PTT / Smart-PTT system works is a superior grade push to talk system with crystal clear voice and accurate GPS location of users. We offer best two way PTT GSM radios in South Africa. Our PTT GSM Portable Radios has security guard clocking system, where guards will conduct security guard monitoring system in South Africa give you the best Guard clocking or security Guard patrolling system. We give you 5 free clocking points to conduct your guard patrol with our Guard patrol Radios. Our clocking or guard Patrol reports are automatically emailed to your specified emails giving you the best Realtime online guard patrol system to perform your guard Tour with the best guard patrol software.