Bosch D166 Telephone Jack, RJ31X type

Ensure uninterrupted alarm reporting and phone-line control with the Bosch D166 RJ31X Telephone Jack. Purpose-built for security and monitoring applications, this telephone jack provides reliable line-seizure capability so alarm panels and surveillance systems can seize the telephone line for priority outbound communication to central stations. The Bosch Telephone Jack (model D166MP, part D166) uses the industry-standard RJ31X interface, making it compatible with PBX systems, alarm panels, and auto-dialers. Its compact white housing (approximately 5 cm square by 1" high) mounts discreetly in equipment rooms or near service points, minimizing visual impact while providing a robust connection point. Installers benefit from straightforward wiring and reduced troubleshooting thanks to Bosch quality and consistent performance. Whether you're upgrading an existing alarm interface or specifying components for a new security installation, this jack delivers dependable connectivity for alarm monitoring, surveillance integration, and telecom management. Add the Bosch D166 Telephone Jack to your system to secure phone-line access and maintain reliable communications — order now or contact your Bosch distributor for compatibility guidance.

• Ensures reliable line seizure for alarm and monitoring systems, allowing central station communication when needed
• Standard RJ31X compatibility (D166MP) for seamless integration with PBX and telephone lines
• Compact, low-profile white design (approximately 5 cm square x 1" high) for discreet surface mounting
• Simple wiring and durable Bosch construction reduce installation time and service calls
• Ideal for security, surveillance, and telecom applications where automatic line takeover is required