LITHOSS
NFS420
Flush Mounted 4 Button Select Flush KNX Keypad Brass Antique with RGB LED and RTC
Product code:
NFS420
This contemporary, flush mounted Lithoss Select keypad in brass antique has 4 buttons with a RGB status LED, along with a temperature sensor integrated in the metal frame ensuring it stays in every way discrete
Description
Button main functions:
- 1 bit commands: load activation / deactivation commands (ON/OFF/TOGGLE) with short press or with differentiation of long and short press
- 1 byte commands (unsigned 0-255 or HVAC commands or value % commands)
- Sending of long action telegrams on the same address of short action or on a different group address
- Cyclic sending
- Sequences (3 commands mixing 1bit/1byte objects) with different group addresses
- Edges for 1 bit / 1 Byte / sequences
- Dimmer management (with single or double push-button)
- Blind / Roller Shutter management (with single or double push-button)
- Scene management
- RGB LED colour per button (orientation light, feedback activation by button or ext. input object)
Temperature sensor main functions:
- Temperature sensor calibration
- Temperature cyclical sending
- 2 different temperature thresholds to trigger 1 bit telegrams alarm/warning
- Enable / disable of alarm/warnings via 1 bit object
Analog inputs (as thermostat) main functions:
- Temperature sensor calibration
- Different control algorithms: 2 point on/off; PWM; Continuous Control / Fan Coil Control
- Different setting modes: via HVAC automatic / via HVAC Manual / via Setpoint
- Window contact function
- Additional external temperature sensors (optional)
Technical Details
Specification
- Bus Voltage: KNX Bus 21...30VDC
- Max Bus Current Consumption: 4mA
- Optionally 1 external probe can be installed with specs:
- NTC temperature probe
- Type A from -20°C to +100°C (ACC003)
- Type B (from -50°C to +60°C) (ACC004)
- Max. length of Connecting Cable: ≤ 10 m (twisted cable)
- Via Push connector
Properties
Properties
| Technology | KNX |
| Brand | LITHOSS |
| Colour/Material | Brass |
| Design range | LITHOSS Select Flush |
| Finish | Brass Antique |
| Frame finish | Brass Antique |
| Switch action | Push Button |
| Gangs | 1 Gang |
| Back Box | Lithoss Flush 1 Gang |
| Operating voltage | KNX Bus (29VDC) |
| HVAC support | Temperature Sensing + Regulation |
| Status LED's | Fixed RGB Colours |
| Buscoupler | Integrated |
