IS-L101L LED Beacon
    
 The IS-L101L unit is an intrinsically safe field mounting beacon which provides a bright flashing warning signal.
 
          
Description:
           
The unit can be used independently or combined with an IS-A105N 49 alarm sounder. Combination units can utilise a common zener barrier or galvanic isolator and may be coupled together or mounted seperately.
With the IS-A105N the alarm accept function can be utilised. By closing a pair of external contacts (i.e push switch) the operator may silence the alarm for set periods between 5 seconds and 2 hours. If after the preset time the alarm condition still exists the sounder will activate again.
      
Features:
           
Input overload and reverse current protection
Prismatic lens optimises L.E.D effectiveness
 
Specification:
    
| Light source: | Array of 6 high intensity L.E.D’s. | 
| L.E.D. colours: | Red, Amber, Blue, Green & White | 
| Note: | Blue, Green & White LED versions utilise a Clear lens | 
| Standalone mode: | 2Hz (2 double flashes per second) | 
| Effective intensity: | 48cd* – measured ref. to I.E.S. | 
| With IS-A105N: | On: 1 Hz (1 double flash per second) | 
|  | Silenced: 2 Hz (2 double flashes per second | 
|  | – alarm accepted) | 
| Voltage: | 16-28vdc via Zener barrier or galvanic isolator | 
| Current: | Stand alone: 25mA typical | 
| With IS-A105N: | 35mA typical | 
| Ingress protection: | IP66 | 
| Rating: | Continuous | 
| Housing material: | UL94V0 & 5VA FR ABS & PC | 
| Housing colour: | RAL3000 Red | 
| Fixings: | Stainless Steel | 
| Cable entries: | 1 x M20 clearance gland knockout | 
| Terminals: | 0.5 to 2.5mm² | 
| Operating temp: | -40° to +60°C [-40 to +140°F] | 
| Storage temp: | -40° to +70°C [-40 to +158°F] | 
| Relative humidity: | 90% at 20°C [68°F] | 
| Weight: | 0.40Kg/0.88Ibs | 
|  |  | 
 Part codes:
          IS-L101L-R/[x]
ATEX / IECEx / FM
II 1G Ex ia IIC T4 Ga (-40ºC <=Ta<= +60°C)
IS Class I, Zone 0, AEx ia IIC T4 Ta= +60°C
IS Class l, Division 1, Groups A, B, C, D T4
GOST-R
0ExiaIICT4 IP65 -40° to +60°C
| [x]: Lens/LED colour: | A: Amber | 
|  | B: Blue | 
|  | G: Green | 
|  | R: Red | 
|  | W: White | 
 
Note: Blue, Green & White LED versions utilise a Clear lens
        
May be powered from any certified Zener barrier or galvanic isloator whose output parameters do not exceed:
Uo : 28VDC Io : 660mA Po : 1.2W
          
Approvals:
      
• ATEX certificate: SIRA 04ATEX2302X
• IECEx certificate: IECEx SIR 04.0039X
• FM approved
• GOST-R certificate: POCC GB.JB05.B03365
    
  
Note: The IS-L101L can be combined with the IS-A105N intrinsically safe alarm sounder.