Introduction to the Apollo SA4700-104APO Twin I/O Module
Apollo SA4700-104APO intelligent twin input/output moduleis a compact, EN54-17/EN54-18 certified addressable I/O device designed for modern fire detection and control systems. Built for compatibility with XP95, Discovery and CoreProtocol panels, the SA4700-104APO packs two independent input/output channels into a single enclosure, each with its own DIL address, monitor input for single-pole volt-free contacts and a changeover relay output. With an integrated controllable loop isolator, nine preconfigured operating modes (including a BS 7273-4 failsafe option), and a long 10-year manufacturer warranty, this module is aimed at installers and system designers looking for a flexible, reliable way to monitor and control auxiliary equipment from an addressable fire control panel.
- Twin independent I/O channels with separate addressing for each channel.
- Monitors volt-free normally open contacts and provides changeover relay outputs for external device control.
- Integrated controllable loop isolator to protect and maintain loop integrity on fault conditions.
- Nine preconfigured operating modes, including compatibility modes between protocols and a failsafe mode to meet BS 7273-4.
- EN54-17 and EN54-18 certified with multiple approvals (LPCB, VdS, BOSEC, FG, CPR).
- Semi-flush or surface mounting with an ergonomic backbox for faster installation.
- 10-year manufacturer warranty for long-term confidence.
Detailed specifications and benefits
Understanding what the SA4700-104APO offers requires a closer look at its technical specifications and how those translate into practical benefits on site.
- Model: SA4700-104APO — an intelligent twin input/output module designed for addressable loops.
- Channels: Two independent channels in one enclosure, each channel addressed separately via DIL switches (address range 1 6 to 254).
- Dimensions and mounting: Approx. 150 d7 60 d7 90 mm; supplied backbox supports semi-flush or surface mounting for flexible placement in plant rooms, risers or equipment cabinets.
- Weight: Lightweight at around 281 g, making it simple to handle and install.
- Supply voltage: 17 635 V dc — compatible with standard addressable loop supplies.
- Quiescent current: Approximately 500 b5A at 24 V dc — keeps loop loading low when idle.
- Relay rating: Changeover relay rated at 1 A (tested at 30 V ac) to safely drive door holders, small relays or signal circuits.
- Inputs: Single-pole, volt-free (normally open) contact monitoring — ideal for conventional tamper and fault monitoring or external device status inputs.
- Operating modes: Nine preconfigured modes, supporting XP95/Discovery/CoreProtocol compatibility and a BS 7273-4 failsafe option for life safety scenarios.
- Operating temperature: -40 to +70 b0C, suitable for a wide range of indoor environments.
- Humidity: 0 695% RH (non-condensing) ensures reliable operation in normal building conditions.
- Ingress protection: IP52 rating for resistance against dust and light water spray in typical installations.
- Certifications and approvals: EN54-17 and EN54-18 certified, with additional approvals (LPCB, VdS, BOSEC, FG, CPR) e28094 key for regulatory compliance in many regions.
- Warranty: 10-year manufacturer warranty giving long-term support and peace of mind.
Benefits: The combination of dual channels, low quiescent current and integrated loop isolator reduces both component count and loop wiring complexity. The relay outputs allow the fire panel to directly control auxiliary devices such as door holders and ventilation shutdowns, while the isolated loop design helps maintain system integrity in the event of a wiring fault.
Use cases and scenarios where the SA4700-104APO excels
The SA4700-104APO is designed for practical, everyday scenarios where monitoring and controlled switching are required from an addressable fire system. Typical applications include:
- Door holder control: Monitor door-holder status and release doors on fire alarm or when a specific logic condition is met. The changeover relay enables conventional door hold-open units or electromagnetic door holders to be controlled directly from the loop.
- Ventilation and smoke control: Use the relays to interface with ventilation shutdowns or smoke extract fans. The module can provide both monitoring and control signals, enabling coordinated smoke control strategies driven by the fire panel.
- Plant shutdown and equipment interlock: Monitor equipment status (e.g., fuel pumps, HVAC plant) and initiate safe shutdown sequences via the relay outputs to reduce fire escalation risk.
- Remote monitoring and signaling: Use inputs to monitor third-party devices (e.g., sprinkler valve positions, emergency lighting status), with the panel alerted to any changes.
- Multi-function installations: With two independent channels in one enclosure, the unit reduces the need for multiple modules where space or loop addresses are limited e28094 an advantage in crowded plant rooms or renovated buildings.
Comparisons with similar products
When selecting an addressable I/O module, installers typically compare single-channel modules, twin-channel alternatives and hard-wired relay panels. Key differentiators for the Apollo SA4700-104APO include:
- Dual channels vs single-channel modules: Two independent channels reduce the number of devices required on a loop and save on spare addresses, installation time and material costs compared with fitting two separate single-channel modules.
- Integrated isolator vs external isolation: The built-in controllable loop isolator maintains loop integrity and simplifies wiring compared to modules that require separate isolators or leave the loop exposed to single-point faults.
- Standards and approvals: EN54-17/EN54-18 certification is a key advantage where regulatory compliance is required; not all competing modules carry the same certification blanket, which can affect acceptance by authorities having jurisdiction.
- Mode flexibility: Nine preconfigured operating modes, including a BS 7273-4 failsafe option, provide adaptable behavior for different fire strategies. Some competing products may offer fewer modes or require custom programming from the control panel.
- Warranty and brand support: A 10-year manufacturer warranty and Apolloe28099s established reputation for fire detection products can be decisive for long-life projects compared with lesser-known suppliers.
Customer testimonials and installer feedback
Direct customer testimonials specific to this SKU may vary across distributors and projects, but recurring installer feedback and representative comments include:
- e2809cStraightforward installation and clear wiringe2809d e28094 installers appreciate the supplied backbox, ergonomic wiring layout and separate addresses for each channel, which speeds commissioning.
- e2809cReliable in the fielde2809d e28094 the integrated isolator and EN54 certification give confidence in system robustness and compliance.
- e2809cFlexible modes for different projectse2809d e28094 the multiple preconfigured modes, including a BS 7273-4 failsafe option, make the module suitable for life-safety critical installations.
These comments reflect typical installer experiences and distributor feedback rather than endorsements from named individuals, but they highlight the practical advantages reported during real-world installations.
Conclusion: Why choose the Apollo SA4700-104APO?
The Apollo SA4700-104APO intelligent twin I/O module offers a practical blend of functionality, certification and installer-friendly design. Its two independently addressed channels reduce system complexity and cost where multiple inputs and outputs are required, while the integrated loop isolator and EN54-17/EN54-18 approvals provide dependable performance and regulatory compliance. With flexible operating modes (including a BS 7273-4 failsafe option), wide temperature range, compact footprint and a 10-year warranty, it suits a broad range of commercial and industrial fire system applications from door-holder control to smoke extraction and plant shutdowns.
For those specifying addressable I/O, the SA4700-104APO is a compelling choice when you need: compact dual-channel capability, low loop loading, robust fault isolation and the reassurance of EN54 certification. Suggested retail price is a384.99 (supplier cost a370.08); consult the Apollo datasheet and your chosen panel manufacturer to confirm mode compatibility and wiring details before installation. For safe, compliant and efficient integration into XP95, Discovery or CoreProtocol systems, the SA4700-104APO is a strong, future-proof option.
