M-E MODERN-ELECTRONICS SDO-10 Security Door Opener Module

In apartment buildings and offices using M-E VISTUS or VISTADOOR intercom systems, the SDO-10 module enables secure door release directly from indoor stations. Installers mount it flush inside, where it connects to the existing 2-wire bus and provides two potential-free relay outputs.

Key specifications

• Product type: Door opener module
• System compatibility: M-E VISTUS / VISTADOOR intercom systems
• Connection technology: 2-wire bus system
• Power supply: Bus-powered from intercom system
• Number of relays: 2
• Relay type: Potential-free (voltage-free)
• Relay 1 function: Door opener control
• Relay 2 function: Light / additional switching function
• Max. switching voltage: 30V AC / 24V DC
• Max. switching current: 1A
• Installation method: Flush-mounted
• Mounting location: Indoor
• Security feature: Sabotage contact (tamper protection)
• Operating temperature range: -20°C to +50°C
• Housing material: Plastic
• Current consumption (standby): < 50 mA
• Protection rating: IP20
• Control method: Via intercom indoor station

Why choose it

The SDO-10 integrates seamlessly into existing M-E intercom installations, adding reliable door release and a second switching function for lighting or other devices. Its potential-free relays ensure safe isolation, while the sabotage contact enhances security against tampering.

Ideal use cases

• Multi-apartment buildings with M-E VISTUS/VISTADOOR intercoms
• Office complexes requiring controlled door access
• Retrofit projects needing additional relay outputs
• Installations where tamper protection is required

Good to know

The module is bus-powered, eliminating the need for a separate power supply. It is designed for indoor flush mounting in a standard wall box. The second relay can be configured for lighting or other auxiliary switching, expanding system functionality.