Transform your property access control with the Centurion G-Speak Ultra 4-Button GSM Intercom System—South Africa's leading wireless intercom solution that turns your mobile phone into a sophisticated access control handset. This 4G/LTE-enabled system eliminates traditional wired handsets, allowing visitors to call up to 2 phone numbers per button (8 total) from anywhere in the world. Configure and manage up to 100 active users or expand to 1500 users via the MyCentsys Remote app, with time-barring capabilities to restrict access during specific hours. The rugged aluminum fascia with backlit buttons ensures clear visibility day and night, while the IP-rated weatherproof enclosure withstands harsh outdoor conditions. Four configurable I/O channels enable integration with gate motors, electric fences, pool pumps, and security systems—controlling your entire property from your smartphone. Features include remote gate opening from anywhere, SMS/email notifications for events (gate open, power failure, tampering), custom message scheduling, and comprehensive administration via G-WEB online portal or mobile app. Power requirements: 10-30V DC with built-in 4G GSM module and both internal and external antenna options. Perfect for residential estates, commercial buildings, townhouse complexes, and multi-tenant properties requiring modern, scalable access control.