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TECHNICAL QUESTIONS ABOUT S1

Questions and answers about Lamport S1.

Practical answers for technicians and project managers: lift calls, fire alarms, protocols, alarm centres, commissioning and troubleshooting. Each technical answer links to its source.

23 answers · Reviewed 4 November 2026

Technical sources: Lamport’s documentation, including the start guide dated 13 August 2026, and SBSC’s certificate register. Partner information is supplied by Lamport.

About Lamport S1

What is Lamport S1?

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S1 is an alarm transmitter that connects an installation’s alarm equipment to an alarm centre and the Alarm Portal. It accepts alarms through interfaces including digital inputs, serial connections and a simulated telephone line. Ethernet, Wi-Fi and LTE (4G) can carry the alarm transmission.

Can one S1 handle several alarm types?

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Yes. One S1 can handle fire, intrusion and other alarms at the same time. Each connection must meet the requirements for its alarm type, including supervision, power supply and fault reporting. Design the complete installation and test every alarm path during commissioning.

Lift alarms and voice calls

Can S1 be used for lift alarms?

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Yes. S1 supports CPC and P100 lift alarms through its simulated telephone line and can connect voice calls through a SIP exchange. Check the emergency telephone’s protocol, SIP service, alarm receiver and backup power. Test both alarm transmission and the call from the lift car before commissioning.

Can S1 replace an older 2G/3G lift alarm?

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S1 can give a compatible lift emergency telephone a communication path over LTE (4G) or IP. Replacement is possible when the telephone’s interface and protocol match S1 and the voice connection works with the chosen SIP service and receiver. Check backup power and the lift’s emergency communication requirements with the responsible lift installer before replacement.

Does S1 support two-way voice for a lift emergency telephone?

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Yes. The start guide documents voice calls for CPC/P100 lift alarms through a SIP exchange. Enter the SIP details under Alarm calls in S1’s configuration. Call failures are logged and reported to the Alarm Portal and/or alarm centre. Test the function with the actual emergency telephone; the product function is not a blanket statement of EN 81-28 compliance for the complete lift installation.

Fire alarms

Can S1 be used for fire alarms, and what does EN 54-21 require?

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Yes. S1 holds SBSC certificate 25-397 under SBF 110:8. For mounting outside the fire control panel, the start guide specifies two EN 54-21 conditions: a supervised connection to the panel and installation in the same enclosure as an EN 54-4-approved power supply. Configure and test fault reporting to the panel, including power supply faults.

Intrusion alarms and alarm class

Can S1 be used for class 4 intrusion alarms?

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Yes, within the certified scope. SBSC certificate 25-396 specifies SSF 114 edition 3, alarm class 4 and environmental class II, with Södertörns brandförsvarsförbund as the named alarm receiving centre. That certificate does not automatically cover every receiver in the partner list. Check the receiver, transmission category and configuration against the project requirements.

Technical alarms

How do I connect technical and operational alarms?

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Use S1’s eight programmable NC/NO inputs for contact signals, or a serial interface when the equipment uses a protocol supported by S1. A serial connection can carry more event information than a simple contact. Define alarm texts, restoration and receivers during design, then test every signal in the Alarm Portal and at the alarm centre.

Alarm centres and reception

Can installers order a connection to SOS Alarm now?

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No. All tests of S1 alarm transmission to SOS Alarm are complete, but SOS Alarm must commission alarm reception before installers can place orders. As of 4 November 2026, the estimate is one to a few months; timing is provisional. Contact Lamport for the current status.

Which alarm centres does Lamport work with?

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Lamport has established collaborations with Tempest Security, Securitas Sverige, Lövestad Larmcentral, Westra Security, SBFF – Räddningscentralen Öst, RSG – Räddningscentral Göteborg and Avarn Security. Confirm the service, alarm type, receiver profile and any certified connection for the specific installation.

Can I keep my current alarm centre?

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Yes, if the alarm centre can receive the chosen S1 transmission and the service meets the installation requirements. Select receivers under Alarm transmission → Alarm centres. Refresh the receiver list and enter the customer and connection details supplied by the alarm centre. Finish with a test alarm whose receipt is confirmed.

Communication paths and protocols

Which communication paths does S1 support, and how does failover work?

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S1 supports Ethernet through WAN/LAN, Wi-Fi and LTE (4G) using the built-in eSIM or a physical SIM card. The priority order is WAN → LAN → Wi-Fi → mobile network. Enabled connections are supervised. Configure the required paths and test failover by disconnecting the primary connection. TETRA SDS requires an external module.

Which alarm protocols and control panels can be connected?

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The telephone interface supports protocols including SIA, Contact ID, CPC and P100. Serial interfaces support examples such as ESPA, Gallagher, Omnis/2010 and Galaxy; support depends on the panel model and software. Receiver-facing protocols include iALSHU, SOSv4 and SIA DC-09. Select the panel-side and receiver-side protocols separately.

Alarm Portal, remote access and video

What can I do in the Alarm Portal?

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The Alarm Portal brings alarm events, installation information, documents and service records together. You can follow events and send notifications through channels such as email, SMS and push. Permissions control which installations and information a user can view and administer.

Can S1 be administered and connected equipment accessed remotely?

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Yes. S1 supports encrypted remote access through Lamport and TOTP two-factor authentication. Lamport VPN can connect S1 LANs within a selected VPN group, and WireGuard is available as a VPN option. Access to connected equipment depends on network configuration and permissions. Enable and test the access required by the installation.

How does video verification work with S1?

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S1 can use ONVIF cameras for alarm-triggered video clips and permission-controlled live viewing in the Alarm Portal. Connect the camera to S1’s LAN and configure which alarms trigger video. Transmission to an alarm centre requires a configured video receiver and a supporting service. Test the complete chain from alarm event to displayed clip.

Installation, testing and troubleshooting

How do I connect to S1 for initial configuration?

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Hold CONFIG for about three seconds to start S1’s Wi-Fi access point. Join the network named Lamport followed by the transmitter ID and open http://192.168.242.1. Follow the start guide to configure communication paths and alarm receivers. Enable only the connections that will be used.

What power supply does S1 need?

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S1 requires 8–32 V DC. The data sheet gives approximately 200 mA at 12 V in the base state, with brief peaks up to 1 A. Size the supply and backup power for the selected equipment and operating time. Fire alarm installations outside the panel also require the shared enclosure with an EN 54-4-approved supply specified in the start guide.

What must be tested before commissioning?

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Trigger alarms from the connected equipment and confirm the correct events at both the alarm centre and in the Alarm Portal. Disconnect the primary communication path and repeat the test over the backup path. Check that communication faults are recorded. Also test restorations, relevant fault outputs and, where used, voice calls and video.

Where do I start if an alarm does not arrive?

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Start with Communication status, then the Alarm log: did S1 receive the event and forward it? Use the connection or ping test to check the network, and check input status for contact connections. Compare the time, alarm code and customer identity with the alarm centre’s log. The System log includes restarts and configuration changes.

How do I update S1 software?

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Open System → Software update with access level 4 authorisation. Retrieve the latest software online or select an update file as described in the start guide. Updating involves a restart and a short interruption. Coordinate with the alarm centre and check alarm transmission and any affected voice and video functions afterwards.

Design and purchasing

What information is needed to select an S1 solution?

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Specify the alarm type and required class, control panel make/model and software version, available interfaces, desired alarm centre and communication paths. Include backup power, voice, video and remote access requirements. Protocols, reception and certified scope can then be checked before equipment is ordered.

Where can I buy S1?

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Lamport has established distributor collaborations with Extronic Elektronik, Copiax, Captech Nordics, Rexel Sverige and AXS Nordic. Contact your distributor for ordering, current availability and pricing. Lamport can provide the technical information needed to select the right solution.

Keep the documentation close.

Use the complete start guide, data sheet and connection specification when designing and commissioning the installation.

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