Digi-Wave 400 Series Tour Guide System for one guide and up to 10

Ideal Use Cases

The Digi-Wave 400 Series Tour Guide System is designed for one guide communicating with up to 10 visitors. Its portable format supports organized tours and other guided-group applications where participants need to hear the guide over a dedicated wireless system. Communication uses a secure, frequency-hopping algorithm in the 2.4 GHz ISM band, providing a focused solution for groups that require mobility, controlled access, and dependable voice transmission.

Why Choose This Model

This 10-person system combines frequency-hopping spread-spectrum operation with multiple security controls. The transceiver supports 87-bit encryption for 300 Series compatibility as well as 87+128-bit encryption, an encryption PIN, and a settings lock. Operating frequencies span 2402 to 2476 MHz, with RF output rated at up to 19 dBm. The listed wireless range is up to 900 ft (274 m), depending on environmental conditions, giving the guide and visitors room to move while remaining connected.

Compatibility options include DLR 400 RCH and DLR 400 ALK receivers. DLT 300 and DLR 360 models are also compatible with some limitations. Receiver compatibility includes DLT 400 and DLT 300 units.

Installation and Integration

The system provides practical connections for guide input, participant listening, charging, and line-level integration. The transceiver includes an internal microphone that is disabled when its microphone jack is engaged. Its 3.5 mm microphone input supports an electret microphone with bias and adjustable gain across a 63 dB range. USB-C supplies adjustable line input and output, while the 3.5 mm TRRS headphone jack delivers 25 mW into 32 ohms.

Receiver-side audio is available through a 3.5 mm TRRS jack with mono output for headphones, earphones, or a neckloop, rated at up to 27 mW into 32 ohms. The receiver LCD displays battery level, RSSI, and group or channel number. The transceiver uses an OLED indicator, a red LED around the Talk button when enabled, and a bi-color green and red LED at the top. Charging is supported through USB-C or two contacts designed for use with the CHG 412.

Performance Highlights

The alkaline receiver operates on two AAA batteries and offers up to 30 hours of battery life when using the specified BAT 010-2 alkaline batteries. Its power-saving function enters Auto Sleep Mode after five minutes without an RF signal from compatible devices. Receiver audio performance is rated at 74 dB SNR, A-weighted, with 0.1% typical THD. Frequency response is 100 to 7,300 Hz in Intercom Mode and 100 to 11,200 Hz in interpretation and other modes.

The transceiver uses an integrated 1800 mAh lithium-polymer battery with smart charging. It provides up to 16 hours of talk time per charge when operating with one transmit channel and one receive channel, with an approximate charge time of five hours. Its audio frequency response is 100 to 11,500 Hz for interpretation, tour, and hearing-assistance operation with four or fewer microphones, and 100 to 7,200 Hz in other modes.

What Makes It Different

The system balances secure wireless operation with distinct power arrangements for the guide and visitors. The rechargeable transceiver supports extended talk time, while the AAA-powered receivers provide up to 30 hours of operation and can conserve energy automatically when no compatible RF signal is present. Encryption choices, PIN protection, and a settings lock add control over system access and configuration.

For transport planning, the listed copolymer case measures 15.7 inches wide by 19.7 inches long by 7.2 inches high externally. Its interior measures 13.0 inches wide by 18.0 inches long by 6.7 inches high, with a 1.5-inch lid depth and 5.2-inch bottom depth. Empty case weight is approximately 6.6 lb.

Final Assessment

The Digi-Wave 400 Series system is a purpose-built portable package for a guide and as many as 10 visitors. Its combination of 2.4 GHz frequency-hopping transmission, encryption options, up to 900 ft of range, flexible audio connections, and long receiver battery life addresses the central requirements of mobile tour communication. The product carries a two-year warranty against component failure and manufacturing defects, subject to the full warranty terms.