Cirrus research CR:202/4 SoundSign ຫນ່ວຍສະແດງໄລຍະໄກ (SHH! Quiet Zone; 40dB(A) ~ 114 dB(A))
Sound Sign Remote Unit "SHH! Quiet Zone"
Trigger level: 40dB(A) to 114 dB(A) in 1dB Steps
Microphone: MK:112
Frequency weighting: ‘A’ Weighting to IEC 61672-1:2002
Time weighting: Slow to IEC 61672-1:2002
Visual indication:
High-intensity white LED with four standard designs
User selectable brightness levels
Display delay time: None or 30 seconds
External power: 2.1mm power jack, 12v DC via mains power supply
Output Connector:
Control for Remote Display Units via standard 2.1mm power
Up to three Remote Display Units can be powered from a
Master Unit
Dimensions: 304.8mm (12”) diameter, 50.8mm (2”) depth
Weight: 0.6kg (1.3lbs)
Mounting: 2 x keyhole mounting slots
Data logging:
CR:203 USB Data Logger with 32,000 samples of LAS (Slow ‘A’ Weighted Sound Level)
User-selectable 1 second (9 hours), 10 seconds (3.7 days), 1 minute (22 days) sampling
ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ