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Alarms · Bobbin indicators · Our take
Nash Siren Night Glo Bobbin Indicator
Siren Night Glo Bobbin Indicator
A tidy, illuminated bobbin built to pair with Nash Siren R4 alarms, with useful options for both tight lines and slack-line work.
- Designed to complement Nash Siren R4 alarms.
- Pulsing LED illumination follows the alarm LED.
- Available in Small at 8 g and Large at 15 g, with two additional 5 g drag weights included.
- Features an enlarged ball clip, secondary grip clip and flexible rubberised 10 cm cable.
Make sure it’s the right one. This review covers the Nash Siren Night Glo Bobbin Indicator in Small and Large sizes, designed for use with Nash Siren R4 alarms.
Tackle Index Score
Tackle Index score
A smart, R4-focused bobbin with useful line-control options and excellent night-time visibility.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality9/10
- Performance8.9/10
- Impact on Fish Catching8.6/10
- Ease of Use9.2/10
- Value for Money8.4/10
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Who it suits
Is it right for you?
Great for
- Nash Siren R4 users fishing overnight. The pulsing bobbin light mirrors the alarm LED, making visual bite indication much easier when the rods are out in the dark.
- Anglers switching between tight and slack lines. The enlarged ball clip offers free line movement, while the secondary grip clip gives you a firmer hold for slack-line work.
Maybe skip if
- Anglers using non-Nash alarms. The MMCX connection and R4-focused design mean it won’t be the natural choice for other alarm systems.
- Minimalists wanting the lightest, simplest bobbin. The illumination, second clip and extra weights are useful, but may be more kit than you need for straightforward close-range fishing.
The lowdown
Introducing the Nash Siren Night Glo Bobbin Indicator
A tidy, illuminated bobbin built to pair with Nash Siren R4 alarms, with useful options for both tight lines and slack-line work.
- Designed to complement Nash Siren R4 alarms.
- Pulsing LED illumination follows the alarm LED.
- Available in Small at 8 g and Large at 15 g, with two additional 5 g drag weights included.
- Features an enlarged ball clip, secondary grip clip and flexible rubberised 10 cm cable.
Quick verdict
A cracking little light show for your R4s
If you’re running Nash Siren R4 alarms, the Night Glo bobbin is a proper neat upgrade. It lights with the alarm LED, gives you a clear visual indication at night and offers sensible line-management options.
The Small is the versatile choice for most carp work, while the Large gives a bit more pull for heavier leads, longer-range fishing or stubborn wind. It’s not the cheapest bobbin around, but the R4 integration is spot on.
A smart, R4-focused bobbin with useful line-control options and excellent night-time visibility.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality
- 9/10
- Performance
- 8.9/10
- Impact on Fish Catching
- 8.6/10
- Ease of Use
- 9.2/10
- Value for Money
- 8.4/10
The rubberised cable, bayonet connection, clip choices and adjustable weighting give it a well-considered feel.
Pulsing illumination and two clip options cover a good spread of night-time and slack-line situations.
It won’t make the carp feed, but clearer indication can help you react properly to subtle movement and drop-backs.
The push-and-twist connection is simple, and changing between clips or adding weights is straightforward.
It offers solid flexibility, though the value is strongest when you already own Nash Siren R4 alarms.
Head to head
How it stacks up
Side by side with the closest kit we've reviewed. This updates as we add more reviews.
Nash
Nash Siren Night Glo Bobbin Indicator (this one)
Top scorer
Scores are our own, out of 10. Best in each row is in green. Prices change, so check the latest before you buy.
The full rundown
Everything you'll want to know about the Nash Siren Night Glo Bobbin Indicator
Night fishing is where a decent bobbin really earns its keep. You can hear an alarm, obviously, but a clear visual cue still matters when you’re half asleep in the bivvy and a slow, hesitant drop-back starts unfolding. The Nash Siren Night Glo Bobbin Indicator is built for exactly that sort of bite-time, with a pulsing light that follows the LED on a compatible Siren R4 alarm.
That R4 connection is the heart of the design. It uses an MMCX bayonet push-and-twist fitting, so attaching the bobbin is a quick job rather than a late-night faff with tiny parts and cold fingers. If your alarms are already Siren R4s, the system should feel properly joined-up from the moment you clip everything together.
When the alarm LED lights, the Night Glo bobbin pulses too. That gives you an extra visual indication right at the rod butt, which is dead handy when you’re watching three rods, fishing a tight swim or trying not to disturb the whole lake by diving straight out of the sleeping bag. It’s a small feature, but one you’ll appreciate during a proper overnighter.
There are two sizes to choose from. The Small weighs 8 g, making it the natural all-rounder for close and medium-range carp work, lighter lines and situations where you want a fairly sensitive indication. The Large comes in at 15 g, giving you more presence and pull when wind, distance or a heavier presentation starts making a lighter bobbin look a bit lost.
Both versions also come with two additional 5 g drag weights. That gives you room to tune the setup rather than being stuck with one fixed feel. Add weight when you need the line held more firmly or when conditions are pushing things about; leave it off when you want a lighter, more delicate indication. It’s a simple bit of flexibility that can save a cheeky bit of swapping.
The clip setup is well thought through for different presentations. The enlarged ball clip is designed to allow free line movement, which suits a more open, free-running approach. That can be useful when you want the indicator to respond naturally to a cautious pickup rather than gripping the line too hard.
For slack-line fishing, the secondary grip clip gives you another option. You can keep the line pinned down and the bobbin sitting where you want it, especially when fishing under the rod tip, tight to the margins or across a quiet area where keeping everything low and unobtrusive matters. It’s not complicated, and that’s exactly the point.
The flexible rubberised cable measures 10 cm and keeps the bobbin hanging neatly below the alarm. It has enough flexibility to avoid making the setup feel rigid, while still keeping the illuminated head in a sensible position for viewing. At night, that clean hanging arrangement makes the pulsing glow easier to pick out.
There is one obvious catch: this is very much an R4 companion. If you’re already on Nash Siren R4 alarms, the fit, light link and matching design make plenty of sense. If you’re using another alarm system, though, this isn’t a universal bobbin you simply throw on any bankstick. For the right angler it’s a cracking bit of terminal-side kit; for everyone else, it could be a bit naff paying for compatibility you can’t use.
Specifications
The nuts and bolts
- Compatibility
- Designed for Nash Siren R4 alarms
- Connection
- MMCX bayonet push-and-twist connection
- Illumination
- Pulsing LED illumination when the alarm LED lights
- Sizes and weights
- Small: 8 g; Large: 15 g
- Additional weights
- Two 5 g drag weights included with both sizes
- Cable and clips
- Flexible rubberised 10 cm cable, enlarged ball clip and secondary grip clip
Specs checked with Nash, Oct 2026.
Spot a model or spec change?
Our take
The R4 companion that earns its place
The big selling point is simple: this bobbin is made to work with Nash Siren R4 alarms. The push-and-twist MMCX bayonet connection is quick, secure and much less faff than fiddling with loose illumination parts in the dark.
Add the enlarged ball clip, secondary grip clip and included drag weights, and you’ve got a setup that can cover a fair few fishing situations. It’s a smart choice for the angler already invested in the R4 system, but less compelling if you’re using another alarm range.
What you’re buying
A tidy illuminated bobbin with useful adjustment
The Night Glo is a dedicated visual indicator for Nash Siren R4 alarms. Its pulsing LED follows the alarm LED, so you get a clear glow at the rod butt when the alarm activates. The MMCX push-and-twist connection keeps fitting quick and simple, which is just what you want when the weather’s foul and the rods are off.
Small weighs 8 g and Large weighs 15 g. Both include two 5 g drag weights, letting you tune the amount of pull for the spot, line and conditions. The enlarged ball clip allows free line movement, while the secondary grip clip gives you a firmer option for slack-line fishing.
Worth knowing. The black version uses a white LED glow. Other colour options include red, blue, white, green and purple, so you can match your setup or pick a colour that’s easy to identify in the dark.
On the bank
Best when your fishing revolves around the R4 system
For R4 users fishing overnight, the Night Glo is a natural fit. The illumination makes drop-backs and tentative movement easier to spot, particularly when you’re watching multiple rods or trying to keep an eye on things from the bivvy. It’s also handy in winter, when daylight disappears before the bite-time really gets going.
The Small is the sensible starting point for most anglers. Pick the Large when you regularly fish at range, use more robust lines or need extra pull in a blustery swim. The two additional weights let either version cover more ground, from a light close-in setup to something with a bit more authority.
It’s less convincing for anglers outside the Nash Siren R4 ecosystem. You’d be buying into a dedicated connection rather than a universal accessory, so the value drops if you can’t use the alarm-linked illumination. In that case, a compatible bobbin for your existing alarms is the more sensible route.
Quick answers
The bits you’ll want cleared up before buying
The Night Glo is not just a glow-in-the-dark bobbin. Its LED pulses when the compatible alarm LED lights, giving you an active visual indication rather than a passive glow that slowly fades. That makes it especially useful for night sessions and low-light fishing.
Clip choice depends on your presentation. Use the enlarged ball clip when you want free line movement and a more natural response. Switch to the secondary grip clip when fishing slack lines and you want the indicator to hold the line more firmly. The extra 5 g weights are there when conditions call for more drag.
Worth knowing. Before ordering, check the alarm connection. This bobbin is designed around Nash Siren R4 alarms and uses an MMCX bayonet push-and-twist fitting. That’s spot on for the right system, but not a universal fit for every alarm on the market.
On paper
Pros & cons
What we like
- Pulsing illumination makes bite indication easy to follow after dark.
- MMCX push-and-twist connection is quick and tidy with compatible R4 alarms.
- Two clip options suit free-running and slack-line presentations.
- Small and Large sizes, plus two 5 g drag weights, give useful setup flexibility.
- The flexible rubberised cable keeps the bobbin hanging neatly from the alarm.
Worth knowing
- Its main benefit is tied to Nash Siren R4 alarms, so compatibility is limited.
- The extra clip and drag-weight choices can feel unnecessary if you only fish one style.
- The illuminated R4-specific design may cost more than a basic unlit bobbin.
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Your questions answered
What anglers want to know
The stuff you’d ask your mate on the next peg. Straight answers, no waffle.
01Which Nash alarms does the Night Glo Bobbin fit?
Which Nash alarms does the Night Glo Bobbin fit?
It’s designed to complement Nash Siren R4 alarms and uses an MMCX bayonet push-and-twist connection. Check your exact alarm model before buying if you’re running anything outside the R4 range.
02What’s the difference between the Small and Large versions?
What’s the difference between the Small and Large versions?
The Small bobbin weighs 8 g and the Large weighs 15 g. Both include two additional 5 g drag weights, so you can add more pull when fishing at range, in wind or with heavier lines.
03Can it be used for slack-line fishing?
Can it be used for slack-line fishing?
Yes. The enlarged ball clip is intended to allow free line movement, while the secondary grip clip provides a firmer hold for slack-line presentations. Choose the clip that matches how you’re fishing the swim.
What anglers say
The word from the bank
Our read: a cracking little light show for your r4s. The strongest reasons to choose it are pulsing illumination makes bite indication easy to follow after dark. and mmcx push-and-twist connection is quick and tidy with compatible r4 alarms.; the main trade-off is its main benefit is tied to nash siren r4 alarms, so compatibility is limited..
Our take on the feedback
Why it appeals
Checked Sept '26 — “Pulsing illumination makes bite indication easy to follow after dark.”
Best fit
Checked Sept '26 — “Nash Siren R4 users fishing overnight: The pulsing bobbin light mirrors the alarm LED, making visual bite indication much easier when the rods are out in the dark.”
Worth knowing
Checked Sept '26 — “Its main benefit is tied to Nash Siren R4 alarms, so compatibility is limited.”
Tackle Index’s take from the product details and fishing fit we checked. We haven’t found enough independent public feedback to call this an angler consensus yet.
Angler score
What our readers rate Nash Siren Night Glo Bobbin Indicator
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