| A. Features List: | 
| Alert Radio Features | Model: R-1650D | Model: R-1630C | Model: R-200 | Model: R-500 | 
| Digital PLL Tuning Receiver, S.A.M.E Alert Technology | Yes | Yes | Yes | Yes | 
| County (SAME#) Memory | 26 | 26 | 26 | 26 | 
| Monitor Alerts for Single County (Home County), Multiple Counties or All Areas | Yes | Yes | Yes | Yes | 
| Single Channel Watch | Yes | Yes | Yes | Yes | 
| Multiple Channel Watch | - | - | Yes | Yes | 
| Amber Alert, All-Hazard Alerts and E.A.S Alerts | Yes | Yes | Yes | Yes | 
| Voice Alert EOM (End of Message) detection / Siren Alert / Siren Mute (Display Only) | Yes | Yes | Yes | Yes | 
| Voice Alert ended with Timer (up to 60 minutes) | - | - | Yes | Yes | 
| Audio Alert Tones for Warning, Watch, Advisory and Test | Yes | Yes | Yes | Yes | 
| Flashing LED Lights for Warning, Watch and Advisory / Statement | Yes | Yes | Yes | Yes | 
| Effective Time Display with Auto Count Down Function for All Active Events | Yes | Yes | Yes | Yes | 
| E.O.M (End Of Message) Detection (Return to previous state, not always reset) | Yes | Yes | Yes | Yes | 
| Defeat Siren / Event Blocking Function | Yes | Yes | Yes | Yes | 
| Event Memory with Date / Time History | 25 | 25 | 51 | 51 | 
| Siren Volume Levels | 24 | 16 | 40 | 40 | 
| Voice Volume Levels | 24 | 16 | 40 | 40 | 
| LCD Back Light Brightness Control | - | - | Yes | Yes | 
| Continuous LCD Back Light On / Off | Yes | Yes | Yes | Yes | 
| Back-up Battery Life Time for Single Channel Watch in Standby Mode | 185 hrs | 200 hrs | 280 hrs | 280 hrs | 
| Back-up Battery Life Time for 7-Channel watch in Standby Mode | - | - | 120 hrs | 120 hrs | 
| Low Battery Detection / Indication | Yes | Yes | Yes | Yes | 
| External Antenna Jack (RCA type) for external antenna (e.g. Reecom RA-1601) | Yes | Yes | Yes | Yes | 
| Alarm Out Socket for external alert system or flashing light (e.g. Reecom RA-1603A) | Yes | Yes | Yes | Yes | 
| Audio Out Socket for audio streaming or external audio power amplifier system use | Yes | Yes | Yes | Yes | 
| Time Function: Auto Calendar displaying Time, Date / Weekday | Yes | Yes | Yes | Yes | 
| Dual Alarm Clock with Snooze | Yes | Yes | Yes | Yes | 
| Dual Alarm Clock with Snooze - settable snooze time and alarm for individual days of the week | - | - | Yes | Yes | 
| Nap Timer (1 to 120 minutes) | - | - | Yes | Yes | 
| Key Lock Function | - | - | Yes | Yes | 
| Key Tone On / Off Setting | - | - | Yes | Yes | 
| AM/FM Digital Radio (FM: 87.5 - 108.5MHz, AM: 520 - 1710KHz) | Yes | - | - | Yes | 
| Auto Station Search Function | Yes | - | - | Yes | 
| Station Intro-Scan Function, 10 seconds play in tuned station while scanning | Yes | - | - | Yes | 
| AM Station Memories : | 12 | - | - | 48 | 
| FM Station Memories : | 12 | - | - | 64 | 
| Dual Radio Alarms (wake to AM/FM radio with Snooze) : | Yes | - | - | Yes | 
| Sleep Timer, settable from 1 minute to 1 hour 59 minutes continuously | Yes | - | - | Yes | 
| Automatically Switch to NOAA Alert during AM/FM broadcast | Yes | - | - | Yes | 
| B. Technical Specifications : | 
| S.A.M.E Alert Sensitivity: | 0.22uV | 
| Channel Selectivity: | 60dB | 
| S/N (Signal to Noise) Ratio: | 45dB | 
| Audio Distortion: | < 3% | 
| Max. Audio Output Power: | 250mW | 
Power Supply (Class 2 Transformer, AC-DC Adapter) : 10 - 14 Volt DC / 250mA
Back-up Battery: 4 'AA' Alkaline Batteries (Standard battery size such as Energizer or Duracell recommended)
Specifications are typical, individual unit might vary.
Specifications and Features are subject to change and improvement without prior notice.
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