Blue Sea 1733 Mini OLED DC Voltmeter 8-36V Yellow IP66
8-21733
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Blue Sea 1733 Mini OLED DC Voltmeter
8–36V DC Input | 12V / 24V Systems | 28.58mm Cut-Out
Blue Sea Systems 1733 is a compact panel voltmeter with a daylight-readable yellow OLED display. It monitors one DC voltage source directly across 8–36V and fits a standard 1-1/8in round panel cut-out.
Key Features
- ✔ Bright yellow OLED display
- ✔ 8–36V DC direct input
- ✔ ±1% voltage accuracy with 0.01V resolution
- ✔ Low 15mA operating current
- ✔ Reverse-polarity protection and IP66 front protection
Technical Specs
| Blue Sea model | 1733 |
| Input range | 8–36V DC |
| Nominal systems | 12V / 24V DC |
| Resolution | 0.01V DC |
| Accuracy | ±1.0% |
| Operating current | 15mA |
| Operating temperature | −40°C to +70°C |
| Cut-out | 1-1/8in / 28.58mm diameter |
| Rear connection | 6.3mm male blade terminals |
| Rated display life | 100,000 hours |
| Weight | 0.09kg |
Compatibility / Fitment Guide
| Check | Required specification | Decision |
|---|---|---|
| Measured circuit | Single DC source between 8V and 36V | Connect across the voltage point to be monitored with correct polarity. |
| System | Nominal 12V or 24V DC | Not suitable for a 48V bank or any circuit that can exceed 36V. |
| Panel hole | 28.58mm round cut-out with flat sealing surface | Allow rear depth and terminal/cable clearance before drilling. |
| Protection | Small correctly fused positive sensing/feed conductor | Install protection close to the source and size wiring for the circuit. |
| Weather exposure | IP66 when correctly panel-mounted with sealing gasket | Protect rear terminals from water, metal objects and condensation. |
Not suitable for: AC voltage, DC above 36V, current or state-of-charge measurement, direct 48V-bank monitoring or installation with exposed rear terminals.
Part Number Cross Reference
| Manufacturer | Blue Sea Systems |
| Manufacturer part number | 1733 |
| Supplier MPN | 1733-BSS |
| 4Boats / Aquafax SKU | 8-21733 |
| Display colour | Yellow OLED |
Frequently Asked Questions
Does it need a shunt?
No. It measures voltage directly and does not measure current.
Can it monitor a 48V bank?
No. Its input range ends at 36V DC.
What size hole is required?
A 1-1/8in / 28.58mm round cut-out.
Is the rear of the meter waterproof?
Do not assume so. IP66 performance depends on correct front-panel sealing; protect rear wiring.
Before ordering: Confirm the measured voltage never exceeds 36V, then check cut-out, rear clearance, fuse protection and polarity.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
