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131, Jalan Sutera,
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Johor, Malaysia.
(Hiu Chin Yang)
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Amperes LS4808 8 ch Speaker Line Surveillance

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Amperes LS4808 8 ch Speaker Line Surveillance Amperes Monitoring Unit
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Product Details:
LS4808 is new speaker line monitoring unit, with the new processor and measurement algorithm, they are now able to perform tasks faster with better accuracy. Additional features included were trigger monitoring, which can be linked to timer for pre-set times activation. Similar to its previous model, they provide reliable speaker circuit monitoring for ground leakage, short and open circuit using impedance measurement method, thus eliminating the use of blocking capacitors and end line resistors.
  • Basic and advance level setting
  • Sensitivity setting
  • Impedance measurement method ; end line resistors, block capacitors not required
  • Faulty circuit disconnection option
  • Built in impedance meter ; 10 to 10K Ohm
  • Fault alert bicolour LED with buzzer
  • Interval detection from 1m to 48 hrs
  • Remote detection activation
  • Short burst signal for lesser interruption
  • Aux contact for 24V overriding during activation period
  • RS485 for remote monitoring
  • Operating voltage - 24V DC via PS9400 PSU
  • Power consumption - 3.8 W
  • Capacity - 8 Channel
  • Processor - 32 Bit ARM Processor
  • Impedance detection range - 10 to 10 K Ohm
  • Power measurement range - 10 to 1000W 100V line
  • Measurement accuracy - +/- 3% range
  • Pilot tone injection frequency - 1 KHz
  • Pilot tone signal output level - 5V Sine
  • Triggering - Auto / Manual
  • Detection Period - 0.5 sec per channel
  • Detection interval - User pre-set from 1 min to 48 hrs.
  • Sensitivity setting - User pre-set at each channel
  • Indicators - LED Normal, Fault, Buzzer, Auto
  • Display LCD - 2 x 16 characters
  • Audible Output Alert - Continuous buzzer with Off option
  • Dry contact setting - 3A
  • DC output in detection mode - 24V DC for individual channel
  • Dimension (WxHxD) - 482 x 44 x 180 mm
  • Weight - 2.4 kg
Operating voltage 24V DC via PS9400 adaptor
Power consumption (idle) 3.29W
Power consumption (All Call) 0.72W
Current consumption (idle) 0.14A
Current consumption (All Call) 0.03A
Max load / channel 500W at 100V line
Number of zones 6
Amplifier inputs 6
Zone selection Front panel switch and remote
Cascade limitation 16
Remote triggering -ve triggered (common ground)
Indicators Individual zone switch, Priority
Data communication RS485 19.2 kbps baud rate
Switching mode Individual, All Call 
Local zone selection bypassed when remote trigger is activated
Dimension (WxHxD) 482 x 44 x 180 mm
Weight 1.85 kg

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