Security Brands 25-S1 Ascent Switch One-Door Cellular Switch
The Security Brands 25-S1 Ascent Switch is a compact cellular switch used to control one gate, door, or dry-contact device through the Ascent cellular platform. It is different from a full telephone entry system or keypad station because the operator interface is handled through Summit Control, text, voice, and app-based access instead of a physical entry panel. For gated communities, commercial entrances, service gates, small apartment entrances, and utility access points, this gives the installer a clean way to add cloud-managed control without mounting an exposed keypad at the entry. Correct fitment matters because this unit is intended for a single controlled point; larger multi-door jobs usually require a different Ascent controller model with additional relays and/or Wiegand inputs.
Common replacement reasons include a failed cellular access controller, upgrading a basic gate trigger to cloud-based access, adding event notifications, moving access control into a secure enclosure, or replacing an older Ascent one-door style installation where the site still wants one controlled output.
Compatible With
Compatibility depends on the exact model, wiring, access-control layout, and site configuration. Use the list below as a researched fitment guide and verify the original part number, product family, and installation requirements before ordering.
- Security Brands Ascent Switch one-door cellular switch applications
- Security Brands 25-S1 cellular switch installations
- Summit Control managed access-control accounts and service plans
- Single gate, door, pedestrian gate, relay-triggered operator, strike, maglock, or device control where one relay output is sufficient
- Select swing gate, slide gate, barrier gate, door operator, and controlled-entry systems that accept a dry-contact access input
- Applications needing app, text, or voice access control without a physical keypad at the entrance
- May be used with compatible Security Brands Ascent cellular antenna accessories where signal relocation or improvement is required
Features and Specifications
| Manufacturer | Security Brands / American Access Systems |
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| Product Type | Cellular access-control switch |
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| Part Number | 25-S1 |
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| Application | One gate, door, or controlled device |
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| Platform | Ascent / Summit Control |
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| Access Methods | App, text, and voice access depending on plan |
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| User Capacity | Up to 10,000 app, text, and voice users depending on plan |
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| Notifications | Push and/or email event and status notifications depending on configuration |
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| Enclosure | IP65-rated polycarbonate enclosure |
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| Notes | Requires compatible cellular service activation and proper signal at the installation site |
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Also Known As / Related Part Numbers
- 25-S1
- 25S1
- Ascent Switch
- Ascent Cellular Switch
- Security Brands Ascent Switch
- American Access Systems Ascent Switch
- Summit Control Ascent Switch
- Related Ascent family models: 25-C1, 25-C2, 25-C4, 25-LT where application requires different relay/input capacity
- Related antenna accessories: 16-ANTX-1, 16-ANTOMNI
Technician Note
Do not choose the 25-S1 when the job needs two or four controlled openings, Wiegand reader inputs, a built-in keypad, a directory, or a telephone-entry style visitor station. For those applications, verify the correct Ascent C-series, keypad, or telephone-entry model.
Before Ordering
- Confirm the site only needs one controlled gate, door, or device.
- Confirm acceptable cellular signal at the controller location or plan for an antenna extension kit.
- Confirm the operator or lock accepts the type of dry-contact trigger being provided.
- Confirm Summit Control service, user limits, and notification features with the selected plan.
- Verify enclosure location, power source, and local code requirements before installation.
Important Ordering Warnings
- Cellular access-control equipment requires activation and ongoing service.
- Do not use an access-control switch as a substitute for required gate safety devices.
- High-voltage power and operator wiring should be handled by a qualified gate technician.
Professional Advisory
For access-control equipment tied into a powered gate operator, door operator, electric strike, or magnetic lock, installation and troubleshooting should be handled by a qualified access-control or gate technician. Do not bypass required safety devices, emergency-access requirements, or local code requirements during installation.
Product Questions and Answers
What does the Security Brands 25-S1 control?
The 25-S1 is intended to control one gate, door, or dry-contact device through the Ascent cellular platform.
Is the 25-S1 the same as an Ascent C2 or C4?
No. The 25-S1 is a one-door cellular switch. Ascent C2 and C4 models are different controllers for larger layouts with additional controlled points and inputs.
Does this unit require a cellular subscription?
Yes. Ascent cellular products require activation and service through the supported Security Brands platform or plan.
Can it be mounted inside a metal enclosure?
It may be installed in a secure location, but cellular signal can be affected by metal or masonry. A compatible antenna extension kit may be needed.
Does it replace gate safety sensors?
No. This is an access-control device and does not replace monitored photo eyes, safety edges, or other required entrapment-protection devices.
