| Sensor inputs: | 
                                    16 two- or three-line sensors 
                                    (e.g. ADOS GTR 196) 
                                    with  current interface  
                                    4 – 20mA | 
                                
                                
                                    | Sensor supply: | 
                                    24 V= / 1A | 
                                
                                
                                    | Measurement ranges: | 
                                    CO    0–300 ppm 
                                    NO2  0–30 ppm 
                                    Petrol 0–100 %  LEL 
                                    CH4   0–100 % LEL 
                                    LPG   0–100 % LEL 
                                    H2       0–100 % LEL 
                                    other ranges by request | 
                                
                                
                                    | Digital inputs: | 
                                    1 input for cancelling the horn 
                                    (siren) | 
                                
                                
                                    | Digital outputs: | 
                                    upto 2 alarm levels, each with 
                                    6 relays, of which, for  each level: 
                                    3 average values 
                                    1 instantaneous value 
                                    1 horn 
                                    1 warning  banner 
                                    1 fault relay 
                                    1 service relay 
                                    All outputs have  floating 
                                    change-over contacts 
                                    rated at max. 250 V / 4 A | 
                                
                                
                                    | Standard output signals: | 
                                    Analog output 4 – 20 mA 
                                    Serial interface RS 232 | 
                                
                                
                                    | Voltage supply: | 
                                    230 V / 50 Hz 
                                    115 V / 60 Hz (optional) 
                                    24 V=  (optional) | 
                                
                                
                                    | Power consumption: | 
                                    max. 30 VA | 
                                
                                
                                    | Ambient temperature: | 
                                    -10 °C to +45 °C | 
                                
                                
                                    | Dimensions (WxHxD): | 
                                    360 x 265 x 160 mm | 
                                
                                
                                    | Weight: | 
                                    approx. 4 kg | 
                                
                                
                                    | Protection type: | 
                                    IP 54 to DIN 40050 | 
                                
                                
                                    | Accumulator operating time: | 
                                    >10 h for a real ”mains fault“ 
                                    display | 
                                
                                
                                    | with UPS 2000-24V/4 Ah: | 
                                    >1 h optional, retaining all 
                                    equipment  functions | 
                                
                                
                                    | Test certificate: | 
                                    German Technical Inspectorate  
                                    approval, according to VDI  2053 in conjunction with ADOS 
                                    TOX 592 CO |