A Long Range Wireless Intercom System with Screen Display is a communication device designed for clear audio and visual interaction over extended distances. Here are its key features:

Key Features:

1. Long Range Communication: 
   - Capable of transmitting signals over several miles, depending on the environment and model specifications.
   - Ideal for large homes, farms, warehouses, or office buildings.

2. Screen Display:
   - Equipped with a visual display that shows caller ID and communication status
   - Allows for visual interaction, enhancing communication clarity and convenience.

3. Wireless Technology:
   - Utilizes radio frequency (RF) for easy installation without the need for extensive wiring.
   - Reduces clutter and makes it easier to position units anywhere within range.

4. Two-Way Communication:
   - Enables simultaneous speaking and listening, much like a phone call.
   - Often includes a push-to-talk feature for efficient use.

5. Additional Features:
   - Include features like intercom call history, volume control, and adjustable ringtones.
   - Integration with smart home systems for added functionality.

6. Power Options:
   - Usually powered by rechargeable batteries or can be plugged into an outlet, providing flexibility in placement.

7. Durability:
   - Designed to withstand various environmental conditions, particularly if intended for outdoor use.

8. Applications:
- Home Use: Communication between rooms, monitoring children, or communicating with family members.
- Commercial Use: Effective in offices, warehouses, or retail environments for team communication.
- Outdoor Use: Suitable for farms or large properties for communication over long distances.

Overall, this system offers a convenient and efficient way to communicate visually and audibly across significant distances, making it a versatile tool for both personal and professional use.

1. Using 433MHz ISM public frequency: 433MHz

2. Air transfer range: 1000 meters

3. Transmitting Power: < 20dBm(<100mw), Receive Sensitivity: <-100

4. AFH technology, super anti-jamming capability

5. Panel with 10 number button, a call key and two indicator lights: power indicator light (red) and operating light (green)

6. With coding, Giving code, ID setting functions.

7. AC 110/220V,or Li-ion battery power supply,Standby Current: 3.5MA, Operation current:70MA.

8. Communication distance: more than 300 meters in open land.

9. This audion intercom can make different combination, it supports maximum 9999 pcs intercoms

1. Power on:Connect the plug to electricity.

2. Standby status: Hand up status: the intercom always in the receiving signal status, light indicator twinkles 4 seconds a time.

3. Call: 3a: Press the ID number of the intercom you want to call, then press CALL button, RED light bright and enter into call status. 3b:If didn’t receive answer signal will be considered no signal, the calling intercom will sound 4 “Di..” to prompt there is no signal and end call status.

If received feedback signal from called intercom:

1). If no one answer the call at the opposite side, it will sound 15 “Du…” and stop, but called intercom is available to answer the call within one minute,after 1 minuters then end call status automatically.

2). If someone answer the call, will stop the sound “Du..” GREEN light bright and enter into conversation status.

C: If the intercom called received signal, RED light bright and create sound, will stop sound after two “Ding Dong”, and enter into standby status after 1 minute. If answer the call, sound stop and GREEN light bright, enter into conversation status, conversation time no limited.

D: Hang-Up: will hear one “Di..” when hang up. The calling intercom can hang up initiatively on call status.

E: If the intercom called is busy, the calling intercom will sound two “Di..” to prompt busy and return to standby status.

F: Press the CALL button again when is on calling status:

1). If the extension intercom is sounding “Ding Dong” then will not repeat “Ding Dong” again, and the calling intercom will create 15 “Du…” and Simultaneously times 1 minute.

2) If the intercom called didn’t sound, it will sound two “Ding Dong”, the calling intercom will sound 15 “Du…”, and simultaneously time 1 minute.

4. Remark: when in the standby status and ID setting status, after press the number key, the green light will flash one time to show that key pressing success (if already pressed the number key for 2 times, the third pressing on the number key will be unavailable, the green light will not flash, and repress the key after 4s will be available again,) number key pressing is available in 4s, and the green light will flash, for one time after 4s clearing record.

5. Coding to add more intercoms: