Free software (supports local area network) you can define 10 phrases POCSAG code format Provides protocol, with the secondary development Output power: 2W Max Data interface: RS232 Source: 5V3A Specifications description Frequency range: 402-470 MHz Modulation: FSK Channel spacing: 2.5/25KHZ Output power: 0.5W-1.0W Sensitivity: -105DB Harmonics: <-25dBm Stability: 5PPM at-10 c ~60 c Connector: BNC Standby current: 50mA Current:< 1A Size (without antenna): 167mm*83mm*40 mm Weight (without antenna): 350g Operating temperature:-10 ℃-50 ℃