Hochiki Smoke Detectors

Shop Hochiki smoke detectors for commercial fire alarm systems: the ESP addressable range and the CDX conventional range, in white, ivory and black cases. Every Hochiki smoke detector here shows its Hochiki part number in the title, so it is easy to match a like-for-like replacement for an existing head or to specify a new system.

Both ranges use Hochiki's High Performance photoelectric (optical) chamber, which can be removed for cleaning or replacement and, according to Hochiki, removes the need for ionisation detectors in most applications. Optical detectors respond well to slow, smouldering fires and are the usual choice for escape routes, offices, corridors and bedrooms. Popular heads include the Hochiki ALN-EN(WHT) ESP optical smoke detector and the Hochiki SOC-E3N(WHT) CDX optical smoke detector, with black-case ESP and black-case CDX versions for dark ceilings.

Where a single optical sensor could cause false alarms, the ESP range also includes the ACC-EN optical/heat multi-sensor and the ACD-EN optical/heat/CO multi-sensor. Marine-approved, intrinsically safe (I.S.) and Ekho hybrid wireless smoke sensors complete the range.

Hochiki smoke detector buying guide

Conventional (CDX) or addressable (ESP)?

• CDX conventional detectors, such as the SOC-E3N, signal an alarm on a zone and are compatible with the majority of existing conventional fire alarm panels. They run on 12-30 V DC and are LPCB approved to EN 54-7.
• ESP addressable detectors, such as the ALN-EN, report their own address to the panel, so the exact location of a fire is shown. They need a panel running the Hochiki ESP protocol, operate on 17-41 V DC and are addressed with the TCH-B200 hand-held programmer.

Which base do I need?

• Hochiki detector heads are sold without a base.
• ESP heads such as the ALN-EN fit the YBN-R/3 sensor base (also in white and black), the YBN-R/3(SCI) isolator base or a YBO-BS base sounder.
• CDX heads such as the SOC-E3N use the conventional YBN-R/6 series bases listed on each product page.
• Detectors with SCI in the part number, such as the ALN-EN(WHT)-SCI, have an integral short circuit isolator. Check the compatible base on the product page before ordering.

Compatibility

• Do not mix protocols on one loop: Hochiki ESP detectors will not work on an Apollo or Notifier loop, and the reverse also applies.
• We stock Hochiki-protocol versions of C-TEC XFP and Kentec Syncro AS panels.
• Complete the system with a Hochiki manual call point: the HCP-E(SCI) for ESP loops or the CCP-E for conventional CDX systems.

See also all smoke detectors, heat detectors, detector bases, smoke detector testers and the full Hochiki range.

Hochiki smoke detector FAQs

What is the difference between Hochiki ESP and CDX smoke detectors?

ESP is Hochiki's addressable protocol: ESP detectors such as the ALN-EN report to the panel individually and need an ESP-compatible panel. CDX detectors such as the SOC-E3N are conventional and signal an alarm on a zone of a conventional panel.

Do Hochiki smoke detectors come with a base?

No, the head and base are sold separately. ESP heads such as the ALN-EN fit YBN-R/3 bases, and CDX heads such as the SOC-E3N fit YBN-R/6 series bases. The compatible bases are listed on each product page.

Can I use a Hochiki smoke detector on an Apollo panel?

Not on an Apollo addressable loop: ESP detectors need a panel running the Hochiki ESP protocol. CDX conventional detectors are compatible with most conventional panels, but always check the panel manufacturer's compatibility list first.