Embedded Walkie Talkie Module LS-818 RDA1846S Chip UHF 400 - 480 MHz RDA1846S Chip 5km

LS-818 is a low cost and high performance integrated walkie talkie module. This module is the 2nd generation of the walkie talkie module and the upgraded version of LS-808.LS-818 comes with built-in high performance microcontroller, narrow band rf transceiver and standard UART interface. It is easy to use. Users only need to add external audio amplifier, microphone and speaker, then it becomes a professional walkie talkie with 1W output. In open area, it can easily achieve 3.5-5Km communication distance. Simplified interface and ultra small size make this module widely used in various applications and conveniently embedded into various handheld devices.

There are two frequency bands of LS-818: LS-818-U and LS-818-V. The only difference is the frequency range. The others are same, including module size, interface, software protocol, etc. The two modules’ frequency ranges are:
LS-818-U: U band, 400 --480MHz LS-818-V: V band, 134 -174MHz

Features:

• Frequency: 400 ~ 480 MHz (UHF)
• Tx and Rx frequency, Tx and Rx CTCSS can be set alone.
• Band width 12.5/25KHz
• Output power up to 1 w
• Transmission distance up to 3.5 to 5 km in Open area
• Sensitivity: - 124 DBM
• High integration,small size
• Built-in EEPROM, data kept even power off off
• 38 level CTCSS code / decode
• 166 level positive, reverse phase CDCSS digital audio
• 8 level squelch
• 8 adjustable volume
• High/ low power is optional (500 mw) - 1 w
• Wide range of working voltage 3.3 to 5.5 V with 1 ppm TCXO crystal, stable performance

Applications:

• Small walkie talkie
• Invisible intercom system
• Sport products
• Building community security system
• Audio surveillance system

Our Products
Our diverse product portfolio includes:

Wireless I/O Controllers – 2DI2DO wireless RTU, 4DI4DO wireless RTU and 8DI8DO wireless RTU. They will help you realise remote ON-OFF control easily. 

Wireless Analog Controllers – 2AI, 4AI, 2AO and 4AO wireless analog RTU will help you collect 4-20mA or 0-5V signal to PLC/HMI in control room by wireless.

Wireless Irrigation Controllers – Smart, water-efficient solutions for agriculture and landscaping. Our customized irrigation controller is OK to control latching valve's ON-OFF automatcally.

Central Control Glow Sticks – Dynamic wireless control for stage performances and events.

Stage LED Wristband Wireless Control Systems – Interactive and synchronized lighting for immersive audience experiences.

Why Choose Us?
✔ Innovation-Driven – We continuously develop advanced wireless technologies to meet evolving industry demands.
✔ Reliable Performance – Our solutions ensure stable, long-range connectivity with low latency.
✔ Customizable Options – Tailored wireless control systems to fit your specific needs.
✔ Expert Support – Dedicated technical assistance to ensure seamless integration and operation.

At Lensen, we empower businesses and creatives with flexible, scalable, and user-friendly wireless control solutions. Whether for industrial automation, smart agriculture, or captivating stage productions, we provide the tools to bring your vision to life—wirelessly and effortlessly.