Honeywell – M301MJ 300 Series Miniature Monitor Module
Discontinued by Honeywell — we can still source the original M301MJ (new, used or refurbished, subject to availability). Request a quote below.
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Quick facts
| Availability | Confirmed on request |
| Category | Honeywell Fire Alarm Panels & Modules |
| Lifecycle | Discontinued |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
Shipping & availability
Can I still buy the M301MJ now that it is discontinued?
Yes. Honeywell has discontinued the M301MJ, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.
When can M301MJ be shipped?
M301MJ is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up M301MJ in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for M301MJ and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for M301MJ, subject to availability and destination.
Mini Monitor Modules are used to monitor a single device or a zone of four-wire smoke detectors, manual fire alarm pull stations, water flow devices, or other normally-open dry-contact devices. They are used to monitor normally-open supervisory devices with special supervisory indication at the control panel. Monitored circuit/device is wired as an NFPA Style B (Class B) Initiating Device Circuit. A 47K ohm End-of-Line Resistor terminates the circuit. Features & Benefits:
Built-in type identification automatically identifies this device as a monitor module to the panel
Powered directly by two-wire SLC loop. No additional power required
High noise (EMF/RFI) immunity
Tinned, stripped leads for ease of wiringCertifications:
UL: S1570
ULC: S1570
FM Approved
CSFM: 7300-0554:131
MEA: 130-00-E
FDNY: COA
Honeywell M301MJ — Mini Monitor Modules are installed in a single-gang junction directly behind the monitored unit. Their small size and light weight allow it to be installed without rigid mounting. Mini Modules are intended for use in intelligent, two-wire systems. Discontinued by Honeywell — no longer in the current range. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.
Specifications
Product
| Lifecycle | Discontinued by Honeywell |
Ordering codes
| Part numbers on this product page | M301MJ, M301MJ-CH, M301MJ/N |
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