 1875EX
Mirror PIR Motion Detector  
 35' x 45' coverage 
"Signature Analysis" pulse count
reduces false alarms
SMD construction for excellent RFI immunity
Back mounting plate
Spare long range mirror
Includes tamper switch and alarm memory
6 year over-the-counter warranty
The ASC Edge:
The Mirror Advantage
Mirror PIRs have distinct advantages over Fresnel lens PIRs. Mirrors provide higher
optical gain than Fresnel lenses--infrared energy is collected more efficiently. With
higher optical gain, less electrical gain is required in the detector circuitry. For
Ademco Mirror PIR designs, this translates to:
A significant improvement in RFI immunity--RF
sources, such as mobile radios, can operate 29% closer without false alarms.
69% greater immunity to conducted sources of
false alarms, such as power supply ripple or power surges.
1875EX Specifications:
| Detection Method |
Passive Infrared |
| Coverage |
35' x 45' (10.6m x 13.7m), 84º (wide angle mirror)
70' x 10' (21.3m x 3m) (long range/curtain mirror) |
| Detection Pattern |
9 zones (6 long, 3 short) (wide angle mirror) 1 zone, 7 tiers (long range/curtain
mirror) |
| Pulse Count |
Installer selectable, 1- or 2-event |
| Detectable Walk Rate |
0.5-5 ft/sec (0.15-1.5m/sec.) |
| Mounting |
7' (2.1m), nominal |
| Indicators |
Red LED with enable/disable link |
| Alarm Relay |
Form A, N.C., 28 VDC, 0.13A max. 22-ohm internal resistor in series |
| Tamper Switch |
N.C. (with cover in place) 0.5A max, 30 VDC |
| Input Voltage |
12 VDC (voltage reversal makes PIR inoperative) |
| Current |
15mA |
| Operating Temp |
32º to 122ºF (0º to 50ºC) |
| Operating Humidity |
Up to 95% RH (max.), non-condensing |
| Dimensions |
3"W x 311/16"H x 11/2"D
(76mm x 94mm x 38mm) |
Accessories:
1875PA: Pet alley mirror for 1875EX
1875RP: Replacement case for 1875EX
How to Order:
1875EX: PIR motion detector. Includes wide angle and curtain
mirrors, mounting plate and mirror masking labels
1875P: Pet alley mirror
1875RP: Replacement case
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