The IS-L101L unit is an intrinsically safe field mounting beacon which provides a bright flashing warning signal. 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 separately. 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 pre-set 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 • Approved for mining applications Approvals • ATEX certificate: SIRA 04ATEX2302X • IECEx certificate: IECEx SIR 04.0039X • GOST-R certificate: POCC GB.JB05.B03365 Coding ATEX / IECEx / FM: IS Class I, Zone 0, AEx ia IIC T4 Ta= +60°C IS Class l, Division 1, Groups A, B, C, D T4 Ex EAC:

Part Codes [y] : LED colour: A: Amber (Amber lens) B: Blue (Clear lens) G: Green (Clear lens) C: White (Clear lens) May be powered from any certified Zener barrier or galvanic isolator whose output parameters do not exceed: 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. cd: With IS-A105N: On: 1 Hz (1 double flash per second) Silenced: 2 Hz (2 double flashes per second -alarm accepted)...