Bena 3 is a compact, integrated system featuring seven relay outputs (1+1+5), ELV inputs and outputs, and a comprehensive suite of communication interfaces.
Designed for seamless compatibility with Benalla panels and various third-party accessories, it can also be networked and integrated with Benalla’s Guest Room Management System, enhancing operational awareness and efficiency.
For rooms requiring enhanced control, up to four B2KPro modules can be integrated into the system.



The Bena 3 is specifically designed for budget hotel guestrooms providing important energy-saving functions as well as room status management.
- Operates with the traditional keyswitch panel, or a combination of door contact and motion sensor(s).
- Power cut-off for room electrical appliances with lighting, dedicated electrical power sockets, and various energy-saving setbacks for air-conditioning.
- A welcome light circuit when entering the guestroom.
- Controls the fan coil unit for high, medium, low speeds; as well as heating and/or cooling control.
- Valet request, food trolley/tray removal request, etc., can also be added.
- Connects to the Benalla Guestroom Management System via physical LAN cable or in-room WIFI system.
- Connects to B2KPro control modules to extend the controls like lighting, air-conditioning, curtains etc.
Sample use case:
- 10-20 sqm rooms with basic lighting requirements
- Compatible with 4-pipe, 3-fan-speed HVAC systems
- HVAC controlled via Modbus
- An additional five on/off circuits can be managed
Key Features
✅Compact footprint
✅ Networked
✅ Scalable
Specifications:
Power:
12VDC
Operating Current: 150mA
Network:
Ethernet 10/100M
WiFi 802.11 b, g, n 2.4Ghz
Control I/O:
1x Doorbell trigger
1x RS 422/485
2x CanBus
Terminals:
Power:
1x 2 pin DC Power Socket
LV: (1.0-2.5mm2)
3x Live
3x Neutral
7x L_out
ELV: (0.5-1.5mm2)
12x ELV Input
12x ELV Output
Control I/O: (0.5-1.5mm2)
1x Can-P
1x Can-M
1x RS422/RS485
1x Doorbell Output
1x Ethernet (RJ45)
LV Control:
2 Relay on/off controls.
Max 240VAC, 2A/Ch, 2A total
1 HVAC Relay Group on/off controls
(3 Fan speed, 2 Valve)
Max 240VAC, 2A/Ch, 2A total
ELV Control:
12 ELV inputs
12 ELV outputs (Max 10mA/Ch)
Construction:
ABS V0 enclosure with integrated
DIN-rail mount (IEC/EN 60715 Type O)
Dimensions: (W x H x D): 160 x 120 x 36 mm
Weight: 0.41 kg
Operating Conditions:
Temperature: 0°C to 40°C ambient
Humidity: 0-95% non-condensing
Storage & Transportation:
Temperature: -25°C to 50°C ambient
Humidity: 0-95% non-condensing
Certification: CE
Model Number: B3
