| Features | KM20B | KM24 | KM24A | KM24G | KM25 | KM25M |
| Product type | Alarm system module | Alarm system module | Alarm system module | Alarm system module | Alarm system + access control module | Alarm system module |
| On-Board wired zones | 2 | 2 | 2 | 2 | - | - |
| On-Board wireless zones | - | - | - | - | 16 | - |
| On-Board PGM | - | 1 (open collector up to 15 mA) | - | - | ||
| Ambient temperature measurement | - | - | Yes | Yes | - | - |
| Integrated proximity tag reader | - | - | - | - | Yes | - |
| Maximum cards (transponder/tag) | 2000 | - | ||||
| LCD type | 2 rows 16 symbols each | Graphic: 128 x 64 dots | Graphic: 128 x 64 dots | Graphic: 240 x 120 dots | Graphic: 240 x 120 dots | Graphic: 240 x 120 dots |
| Keys in keypad | 20 | 24 | 24 | 24 | 25 | 25 |
| Programmable fast keys (F-Keys) | 32 | 32 | 32 | 32 | 32 | 32 |
| Data bus protocol | KRBUS | KRBUS | KRBUS | KRBUS | KRBUS, wireless KRBUS | KRBUS |
| Zone loop (detector) type | NC, NO, NC/EOL, NO/EOL, NC/DEOL, NO/DEOL | Wireless | - | |||
| Maximum wiring distance to CP | 300 m | 300 m | 300 m | 300 m | 300 m | 300 |
| Power supply | 9 - 14 V | 9 - 14 V | 9 - 14 V | 9 - 14 V | 9 - 14 V | 9 - 14 V |
| Voltage measurement on keypad | Yes | Yes | Yes | Yes | Yes | Yes |
| Current consumption | Backlight on 100 mA, Backlight off < 50 mA. | Backlight on 80 mA, Backlight off < 68 mA. | Backlight on 110 mA, Backlight off < 50 mA, When alarming <220 mA | |||
| On-Board sounder | Buzzer | Buzzer | Speaker | Speaker | Speaker | Speaker |
Backlight color | Display = blue, keypad = yellow | Display = blue, keypad = blue | Display = blue, keypad = white | |||
| Character set | Latin, Russian, Greek, East European, West European, Azeri, Turkish, Scandinavian. | Major character sets of the world. | Major character sets of the world. | |||
| User interface type | Advanced, Simple, Baltic, Asian. | Navigation menu with short help text system. | Navigation menu with frequently used menu commands on touch screen | |||
| Overall dimensions W x H in mm | 115 x 95 | 92 x 133 | 92 x 134 | 92 x 134 | ||
| White color model | KM20B | KM24 | KM24A | KM24G | KM25 | KM25M |
| Black color model | - | - | - | - | KM25_BLACK | KM25M_BLACK |
| Environmental compliance | ROHS | ROHS | ROHS | ROHS | ROHS | ROHS |
| Operating temperature | 0oC up to +50oC | |||||
| Production status | In production | In production | In production | In production | In production | In production |
| Interface with PC (programming, firmware update) | USB mini-B | USB mini-B | USB mini-B | USB mini-B | USB micro-B | USB micro-B |
| Latest firmware versions, user and programming manuals |  Download | Download | Download | Download | Download | Download |