ZS-DSSM (E07-941: 941 - 959 MHz)

Ultra-Compact Digital Wireless Transmitter
DSSM is Lectrosonics' smallest water-resistant digital transmitter, ideal for theater, film, TV, and live production.

IP57 Water Resistance
Built to withstand dust and submersion in water up to 3.3 ft for 30+ minutes which is perfect for demanding environments.

Wide Compatibility
Works with DSR, DSR4, DSQD, DCR822, DCHR, and M2Ra digital receivers.

LEMO 3-Pin Input with Servo Bias
Supports electret lavaliers, dynamic mics, and line-level sources with precision input control.

Selectable RF Power
Transmit at 10, 25, or 50mW in D2 mode, or 4mW in High Density (HDM) mode.

Built-In DSP Limiter and Low-Cut Filters
Protects against audio overload and enables selectable low-frequency roll-off from 35 to 150 Hz.

AES 256-Bit CTR Encryption
Offers secure transmission with four key management policies for professional and confidential applications.

Rechargeable LB-50 Battery
Runs up to 6 hours per charge; easily removed and replaced in the field.

OLED Display with Membrane Controls
Provides easy access to settings with a clear interface and intuitive navigation.

Remote Control via LectroRM App
Make adjustments wirelessly from iOS or Android devices using encoded audio tones.

4-Bay Charger for DSSM and LB-50
The CHSDSSM drop-in charger can charge up to four DSSM transmitters or LB-50 batteries simultaneously.

Expandable Charging System
Daisy-chain up to 4 charging units (16 batteries or transmitters) with one DCR5/9AU power supply (sold separately).

Charge Status LEDs
Each bay has a red/green LED to indicate charging progress at a glance.

Fast Charging
Fully charges each battery or unit in approximately 3 hours.

Compact and Rack-Friendly
Measures just 8.5 x 4.4 x 1.2", ideal for mobile kits or larger charging stations.

General Specifications
Device Type: Water-Resistant Micro Digital Wireless Transmitter
Frequency Range: 941.525 to 959.825 MHz
Wireless Technology: Digital UHF
Compatibility: DSQD, DCHR, M2Ra, DSR, DSR4, DCR822
Encryption: AES 256-bit CTR (Universal, Shared, Standard, Volatile)
Construction: Machined aluminum alloy, ebENi finish
Water Resistance: IP57 (dust protected, immersion up to 3.2 ft for 30 min)
Display: OLED
Control Interface: Membrane switches, LectroRM App (iOS/Android), IR Sync
Firmware Updates: USB Micro port (internal, via Wireless Designer software)

Audio Specifications
Input Connector: LEMO 3-pin
Input Types: Microphone, Instrument, Line-level
Bias Power: 4 V Plug-in Power
Frequency Response: 35 Hz to 20 kHz
Limiter: DSP-controlled analog limiter with >30 dB range, dual-release envelope
Low Frequency Roll-Off: Selectable at 35, 50, 70, 100, 120, 150 Hz
Gain Adjustment: 1 dB steps
Muting/Auto Gain: Not supported

RF Specifications
RF Output Power (D2 Mode): 10 / 25 / 50 mW
RF Output Power (HDM Mode): 4 mW
Antenna: Removable flexible whip, SMA mount

Power Specifications
Battery Type: LB-50 Li-ion rechargeable, 1000 mAh (included, replaceable)
Battery Life: Up to 6 hours (on full charge)
Charging Time: 3 hours (via CHSDSSM charger)

Physical Specifications
Dimensions: 2.6 x 1.9 x 0.7 in / 66 x 49 x 17 mm
Weight: 3.5 oz / 100 g (with battery)

Charging Station (CHSDSSM) Specifications
Capacity: Charges up to 4 DSSM transmitters or LB-50 batteries
Chaining Capability: Up to 4 units (16 slots total) with single DCR5/9AU PSU
Charging Status: Individual LED indicators (Red = Charging, Green = Charged)
Fuse Protection: Individual 10A one-time fuse per bay
Power Input: 100–240 VAC, 50/60 Hz, 2 A (AC adapter not included)
Dimensions: 8.5 x 4.4 x 1.2 in / 216 x 111 x 29.4 mm
Weight: 1 lb / 471.7 g