Honeywell Searchpoint Optima Plus 2108B0291 – Installation: Optima Plus Earth Bonding Kit (lug+screw+washer)
2108B0291 is a Searchpoint Optima Plus Installation: Optima Plus Earth Bonding Kit (lug+screw+washer). It is not a gas detector body and will not detect LEL on its own. Order this SKU for maintenance, calibration or mounting; the head remains a 2108N transmitter number.
2108B0291 is a Installation; see same-class SKUs in the matrix.

Part-number decode
| Segment | Meaning | This SKU |
|---|---|---|
| Family | Honeywell Searchpoint Optima Plus point IR | Optima Plus |
| P/N | Optima Plus Earth Bonding Kit (lug+screw+washer) | 2108B0291 |
| Class | Accessory | Installation |
Technical specifications
| Category | Accessory / Installation |
|---|---|
| Description | Optima Plus Earth Bonding Kit (lug+screw+washer) |
| Gas | — |
| Output | — |
| Approvals | see description |
| Entries | — |
| Enclosure | — |
| RGC | — |
| Principle | Point IR (dual source, dual beam) |
| Range | — |
| Ingress | 随本体 |
Why this part number
Keep 2108B0291 on its own BOM line so windows, lamps, PCBs, glands and brackets can be replaced on their own cycle. Do not bury it under 2108N4000N, and do not fit XCD or XNX spares on Optima optics.
Spares and mates
2108B0291 is Searchpoint Optima Plus Installation. This SKU is a spare or accessory and needs an Optima Plus detector. Matrix: product-2698. Do not substitute Sensepoint XCD cartridges or XNX personalities.
Typical applications
Use 2108B0291 against installed Optima Plus points: dust barriers after deluge, flow housings on extractive loops, cups and cylinders at annual gas. Match the detector thread (M20 vs NPT) before the box ships.
Selection contrast
| P/N | Type | Gas | Cert | Output |
|---|---|---|---|---|
| OPTIMAEARTHKIT | Installation | — | — | — |
| OPTIMASPACER | Installation | — | — | — |
| OPTIMACONDUITKIT | Installation | — | — | — |
Installation and service
Isolate power before swapping 2108B0291. Refit seals to the specified torque and keep M20/M25/NPT families apart. Zero and span afterwards; keep fingerprints and condensation off the optics.
FAQ
- Typical output?
- Often 4–20 mA — confirm by ordered configuration.
- Thread mix-ups?
- Yes. Glands, plugs and adaptors split M20 / M25 / 3/4" NPT. Copy the detector nameplate.
- Lead time?
- Lot-based. Do not substitute a look-alike OPTIMA* SKU without matching the part number.
- Can I fit an XCD/XNX spare instead of 2108B0291?
- No. Optima optics, seals and connectors are unique.
- Will 2108B0291 detect gas by itself?
- No. 2108B0291 is a Installation (Optima Plus Earth Bonding Kit (lug+screw+washer)) and needs an Optima Plus detector body.
Documents
Optima Plus datasheet 1 · Datasheet 2 · On-site part-number matrix
Availability and enquiry
Availability: Not in stock — orders accepted; lead time approx. 12 weeks. Quote full P/N 2108B0291, gas/range and approval.