Description
Professional IP67 Submersible Remote Speaker Microphone with Emergency Button
Genuine Hytera heavy-duty palm speaker mic featuring IP67 water immersion protection, an emergency call button, 3.5mm listen-only earpiece jack, and UL913 intrinsically safe compatibility.
The Hytera SM18N2 (catalog part SM18N2 / SM18) is an authentic original equipment manufacturer (OEM) heavy-duty remote speaker microphone (RSM) engineered for mission-critical voice communications across public safety, utilities, manufacturing, security, and industrial sectors. Built to withstand demanding physical conditions, this durable accessory carries an IP67 ingress protection rating, providing total defense against airborne dust penetration and withstanding complete water submersion up to one meter for 30 minutes without seal failure. When paired with compatible Hytera PD7i-UL913 and PD9i-UL913 portable radios, the SM18N2 is certified for deployment in hazardous, intrinsically safe (UL913) environments where non-incendive communications are required.
Designed with personal safety and operational awareness in mind, the Hytera SM18N2 features a prominent, tactile orange emergency button located on the top of the housing, allowing operators to send duress signals and priority alarm calls instantly without reaching down to their belt-mounted transceivers. The internal acoustic assembly integrates a high-sensitivity electret condenser microphone alongside a powerful 2W maximum loudspeaker to deliver clear, distortion-free voice audio through ambient plant noise and severe weather. A built-in 3.5mm external audio jack enables the connection of secondary receive-only surveillance earpieces for private conversations in crowded public spaces or high-risk operational settings. Operating under commercial FCC Licensing standards, the SM18N2 features a heavy-duty coiled cord terminating in a dedicated 16-pin multi-pin radio connector with a knurled thumbscrew lock to guarantee continuous signal continuity across Hytera PD7i and PD9i digital portable radios.
Key Features & Benefits
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IP67 Submersible Protection: Completely sealed against dust, grit, and water immersion up to 1 meter (3.3 feet) for 30 minutes, ensuring dependable performance in wet, muddy, or stormy field operations.
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Intrinsically Safe (UL913) Capable: Factory certified for deployment in hazardous industrial locations when paired with compatible Hytera PD7i-UL913 or PD9i-UL913 certified portable radios.
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Dedicated Emergency Alert Key: Top-mounted tactile orange emergency button enables quick, single-touch duress calls and alarm activation in critical situations.
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Integrated 3.5mm Earpiece Jack: Built-in 3.5mm socket allows seamless connection of listen-only earpieces for discreet communications and enhanced situational awareness.
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High-Output 2W Audio Speaker: Delivers loud, intelligible receive audio engineered to overpower loud machinery, engines, sirens, and outdoor wind noise.
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16-Pin Locking Connector: Rugged multi-pin connector block with a knurled thumbscrew securely locks to the radio chassis to prevent accidental disconnections.
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360-Degree Swivel Clothing Clip: Reinforced stainless steel alligator clip rotates smoothly to fasten securely to shoulder epaulets, duty straps, or lapels.
Specifications
| Attribute |
Details |
| Brand |
Hytera |
| Model / SKU |
SM18N2 / SM18 |
| Product Type |
Rugged Remote Speaker Microphone (RSM) |
| Ingress Protection |
IP67 (Dust-Tight & Submersible to 1m for 30 min) |
| Intrinsic Safety Rating |
UL913 Certified (When paired with UL913 radio models) |
| Radio Connector |
Hytera Proprietary 16-Pin Multi-Pin with Knurled Thumbscrew Lock |
| Accessory Audio Interface |
3.5 mm (1/8") Receive-Only Audio Socket |
| Microphone Sensitivity |
-42 ± 3 dB @ 1 kHz (3.0 V, 2.2 kΩ, 0 dB = 1 V/Pa) |
| Speaker Rated Power |
1.0 W (Rated) / 2.0 W (Maximum) |
| Speaker Impedance |
16 Ω ± 15% @ 1.5 kHz |
| Speaker Frequency Response |
90 ± 4 dB @ 1 kHz (1 W / 30 cm) |
| Controls |
Side PTT Button, Top Emergency Alarm Button |
| Operating Temperature |
-30°C to +60°C (-22°F to +140°F) |
| Storage Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Dimensions (L x W x H) |
3.40 x 2.44 x 1.72 in (86.30 x 62.10 x 43.80 mm) |
| Weight |
Approx. 0.35 lbs (160 g) |
| Cable Configuration |
Heavy-Duty Coiled Cable with Strain Relief |
Compatibility
Compatible Hytera Portable Two-Way Radios
Recommended Accessories
Receive-Only Earpieces (3.5mm Plug)
More Resources
Frequently Asked Questions
What do the numbers in part number SM18N2 indicate?
In Hytera's naming scheme, SM18 designates the rugged remote speaker microphone housing platform with an integrated emergency button. The N2 designation identifies the 16-pin multi-pin radio connector configuration and internal audio circuitry tailored specifically for Hytera PD7i and PD9i series portable radios.
Is the Hytera SM18N2 intrinsically safe?
Yes, when connected to an intrinsically safe Hytera portable radio such as the PD702i-UL913, PD752i-UL913, PD782i-UL913, or PD982i-UL913. The combination is certified to UL913 standards for safe operation in designated hazardous, explosive gas, or dust environments.
What does the orange button on top of the microphone do?
The orange button is a programmable emergency key. When activated, it triggers the host radio’s pre-programmed emergency profile, immediately sending distress alarms, emergency telemetry, or priority audio to dispatch and team members.
Can I plug an earpiece directly into the SM18N2?
Yes. The Hytera SM18N2 features a built-in 3.5mm audio jack. When an earpiece (such as the Hytera EA-01 or EH-01) is plugged in, receive audio is automatically muted on the main speaker and rerouted to the earpiece for private listening.
Does this microphone work with Hytera HP series radios?
No. The SM18N2 uses Hytera's 16-pin multi-pin connector specifically designed for the PD7i and PD9i series. Hytera HP series radios (such as the HP602 and HP782) utilize a different multi-pin connector interface.
Warranty
1-year manufacturer’s replacement warranty.
