Description
Versions:
- Algo 8420 (SIP)
- Algo 8420-IC (InformaCast)
The Algo 8420 IP Dual-Sided Display Speaker is a SIP-compliant, multicast-capable PoE endpoint built for two-sided audio and visual communication. It combines two 15.6" wide-angle LCD screens, high-intelligibility wideband speakers, and high-visibility multi-color LED flashers to handle voice paging, visual alerts, scrolling messages, clock displays, and custom images—all mirrored on both sides. Perfect for hallways, corridors, and large open spaces where one-sided solutions just won’t cut it. When idle, it shows an NTP-synchronized analog or digital clock, rotating images, or goes into sleep mode to save power. An embedded microphone adds ambient noise detection and two-way talkback so staff can respond in real time.
The Telecom Spot Expert Take: IT teams in schools, hospitals, airports, and corporate campuses love the Algo 8420 because it solves the classic hallway communication problem: one device covers both directions without dead zones. The dual LCDs and mirrored flashers make sure no one misses critical info—whether it’s a daily announcement, weather update, or lockdown alert. Wideband audio stays clear even in noisy environments thanks to automatic volume adjustment, and the RESTful API plus easy provisioning means your team can manage it remotely alongside your existing VoIP system. If you’re upgrading from single-sided speakers or analog paging, this is the modern, future-proof upgrade that reduces missed messages and improves safety without extra hardware.
Key Features
- Two 15.6" Wide-angle viewable LCD screens for off-axis visibility
- Display for digital or analog NTP clock, scrolling text, and emergency notifications
- Public address (PA) IP speaker
- Unlimited and customizable visual display capabilities with over 16 million colors
- Sleep mode and screen dimming to save on power usage
- Secure SIP using TLS and SRTP
- LED flashers for attention-getting alerting
- Wideband HD voice for high-intelligibility speech
- Remotely manageable for easy monitoring, maintenance, and management
- PoE + (IEEE 802.3at) & PoE ++ (IEEE 802.3bt) Powered
- Ideal for a school, in addition to a waiting area / room for hospitals, government offices and transport terminals (e.g., air, bus, rail), and workplace lunch or break room and cafeteria spaces
Please see the Algo 8420 Datasheet for more information.







