Rechargeable Digi-Wave 400 Series Tour Guide Sys one guide and up to 11

Ideal Use Cases

The Williams AV rechargeable Digi-Wave 400 Series Tour Guide System is designed for guided group communication between one guide and up to 11 visitors. Its portable format supports groups that need clear communication while moving through a tour environment. The system operates in the 2.4 GHz ISM band using frequency-hopping spread spectrum technology across 2402 to 2476 MHz. Its stated range reaches up to 900 feet, or 274 meters, depending on environmental conditions, giving the guide flexibility across both compact and extended tour routes.

Why Choose This Model

This system combines rechargeable operation with multiple layers of communication security. Available security features include 87-bit encryption for 300 Series compatibility, 87+128-bit encryption, an encryption PIN, and a settings lock. The rechargeable lithium-polymer battery has an 1800 mAh capacity with smart charging built into the transceiver. Battery life is rated at up to 32 hours per charge in one-channel receive mode, while a full charge takes approximately five hours. Auto Sleep Mode activates after five minutes without an RF signal from compatible devices to support efficient battery use.

Installation and Integration

The specified compatible units are the DLT 400 transceiver and DLR 400 RCH receiver. Additional receiver compatibility includes the DLR 400 ALK, DLT 300 with some limitations, and DLR 360 with some limitations. USB-C connections support charging as well as adjustable-level line input and output. Two charging contacts allow use with the CHG 412. The charging system data specifies capacity for 12 units, with an output of 5 VDC at 0.5 A per bay and charge-status indicators displayed on the DLT or DLR. Its universal DC adapter provides 5 VDC at 6 A with center-positive polarity, while the listed TFP 066 input accepts 90 to 240 VAC at 1.5 A maximum. The CCS 054 replaces the CCS 049.

Performance Highlights

The Digi-Wave platform uses FSK modulation with RF output rated at 19 dBm maximum. Audio frequency response is 100 to 7,200 Hz in Intercom Mode and 100 to 11,500 Hz in other modes at the -3 dB level. The specified signal-to-noise ratio is 73 dB A-weighted, with total harmonic distortion of 0.1 percent at default volume and 1 kHz. A 3.5 mm TRRS headphone jack supplies 25 mW into 32 ohms. The internal microphone is disabled when the microphone jack is engaged, and the 3.5 mm microphone input provides electret bias with an adjustable 63 dB gain range. Side tone operates 6 dB below volume, with Off, Low, and High settings available.

What Makes It Different

The system brings rechargeable operation, secure frequency hopping, audio input, and adjustable line-level connectivity into one tour guide platform. A red LED surrounding the Talk button indicates when talk is enabled, while a bi-color LED at the top changes between green and red. The listed system voltages are 14 VDC for the OLED, 5 VDC for RF, and 3.3 VDC for logic. The operating temperature range is 14 to 113 degrees Fahrenheit, or -10 to 45 degrees Celsius. The supplied technical data also identifies an around-ear speaker specification with a 3.5 mm mono plug, 39-inch cord, 23 mm driver, 32-ohm nominal impedance, 20 Hz to 20 kHz frequency response, 30 mW maximum input, and 118 dB sensitivity at 1 kHz.

Final Assessment

The rechargeable 11-person Digi-Wave system is a focused solution for a guide who needs to address up to 11 visitors through a secure wireless connection. Its combination of up to 900-foot range, long rechargeable battery operation, approximately five-hour charging, selectable security controls, and broad Digi-Wave receiver compatibility supports organized mobile communication. The listed enclosure is black ABS plastic with a metal base, measuring 26.2 inches long by 19.7 inches wide by 13.2 inches high and weighing 23 pounds. Approvals include CE, FCC, WEEE, RoHS, and CB. The warranty is two years, with cables and the power supply covered for 90 days.