ST-A1 Ultra-Slim Design – 9mm Thickness Unique Pattern Easy Battery Replacement We are online Now! How can we assist you? WhatsApp Call Now Home » Products » Transmitter » 1 button bell » ST-A1 Related Product Mini MonitorSR-300F PagerSB-700 Corridor LightSRL-300 Light IndicatorSLL-400 Product Detail View PRODUCT SPECIFICATION Description Ultra-Slim Design – 9mm Thickness Unique Pattern Easy Battery Replacement Specification Number of buttons1Modulation Type/FrequencyFSK/447.8625MHzPower SupplyDC 3V/CR 2025 1EA(Coin Battery)AntennaPCB pattern antennaDimensionØ59 x H9mmWeight15gColorDark-blue, White Features The most applicable call button in various fields Slim and attractive design Benefits Provide high quality service Increase customer satisfaction Reduce staff cost Improve work efficiency System Map Press the call bell when service is needed. The call bell number will be displayed on the receiver with a sound. The direct pager can receive call directly from the transmitters.