Installation Instructions 
1. INTRODUCTION
The NEXT MCW is a microprocessor-controlled wireless digital PIR 
detector, designed for easy installation, free of vertical adjustment. 
It features a cylindrical lens with uniform detection sensitivity 
throughout its operating range, up to 12 meters (40 ft), with wall 
creep zone protection.  
NEXT is a registered mark of Visonic Ltd. 
The advanced True Motion Recognition™ algorithm (patented)
 
allows the NEXT MCW to distinguish between the true motion of an 
intruder and any other disturbances which may cause false alarms. 
An on-board motion event jumper determines whether 1 or 2 
consecutive motion events trigger an alarm. 
The NEXT MCW includes the following features: 
•  Incorporates a fully supervised PowerCode transmitter 
•  Patented sophisticated motion analysis algorithm - True Motion 
Recognition (TMR™) 
•  Sophisticated frequency domain digital signal processing 
•  No vertical adjustment is needed 
•  Programmable motion event counter 
• After detection, the detector disarms itself to save battery 
power. It rearms (reverts to the ready state) if there is no 
subsequent detection throughout the following 2-minute period 
• An optional version provides better protection for systems 
compliant with DD243. After initial detection, the detector is 
capable of 7 additional detections for a period of 5 minutes.  
Further detection is possible only if no movement occurs during 
the following 2 minutes. The detector will revert to the initial 
state if there is no movement for an additional 5 minutes. 
•  Very low current consumption 
•  Microprocessor-controlled temperature compensation 
•  Sealed chamber protects the optical system 
•  Front cover tamper switch. 
•  Back tamper switch (option) 
•  White light protection 
•  Elegantly styled, sturdy case 
 
 
Figure 1. General View 
 
Figure 2. Inside View 
For UL installations: The detector is for use with UL listed 
control unit PowerMax+ only. 
 
2. SPECIFICATIONS 
OPTICAL 
Detector Type: Dual element low-
noise pyroelectric sensor. 
Lens Data 
  No. of Curtain Beams: 9 + 5 
 Max. Coverage: 12 x 12 m  (40 
x 40 ft) / 90° 
ELECTRICAL 
Internal Battery: 3V Lithium 
battery, type CR-123A. For UL 
installations, use Panasonic or 
Sanyo only. 
Nominal Battery Capacity: 
1450 mA/h. 
Standby Current Drain: approx. 
0.025 mA. 
Transmit Current Drain: 20 mA 
(including LED). 
Battery Life (with LED on): 
Typically over 3 years. 
 
 
Figure 3. Maximum 
Coverage Pattern 
Battery Power Test: Performed immediately upon battery 
insertion and periodically after every several hours. 
FUNCTIONAL 
True Motion Event Verification: 2 position selector - 1 (OFF) or 
2 (ON) motion events. 
Alarm Period: 3 seconds. 
Visual Indications:  
LED Lights for about 3 seconds upon transmission of alarm & 
tamper messages and upon motion detection in the walk test 
mode.  
LED Flashes during the power-up stabilization period, or 
after restoring (pressing) the tamper switch. 
LED Does not light upon transmission of supervision 
messages.  
Rearm Timer: Rearms the detector 2 minutes after the last alarm. 
Timer disabled in the walk test mode – not applicable for the 
DD243 version (see section 1). 
WIRELESS 
Frequency (MHz): 315 (U.S. version), 433.92, 868.95, 869.2625 
or other frequencies according to local requirements. 
Transmission Sequence: 3 data bursts at variable intervals 
within 3 seconds. 
Encoding: 24-bit ID, over 16 million possible combinations. 
Total Message Length: 36 bits. 
Tamper Alert: Reported when a tamper event occurs and in any 
subsequent message, until the tamper switch is restored. 
Supervision Message: Signaling at 60-minute intervals (U.S. 
version) or 15 minute interval (UK version), or according to the local 
standards. 
MOUNTING 
Height: 1.8 - 2.4 m (6 - 8 ft). 
Installation Options: Surface or corner. 
ACCESSORIES:  
BR-1: Surface mounted swivel bracket, adjustable 30° down and 
45° left/45° right.  
BR-2: BR-1 with a corner adapter  
BR-3: BR-1 with a ceiling adapter 
ENVIRONMENTAL 
RFI Protection: >20 V/m up to 1000 MHz. 
Operating Temperatures: -10
°C to 50°C (14°F to 122°F). 
Storage Temperatures: -20
°C to 60°C (-4°F to 140°F). 
Compliance with Standards: Designed to meet FCC Part 15 
and Directive 1999/5/EC of the European Parliament. 
EN 50131-2, Grade 2, Class II 
PHYSICAL 
Size
 (H x W x D): 94.5 x 63.5 x 53.0 mm (3-11/16 x 2-1/2 x 2-1/16”). 
Weight (with battery): 70 g (2.5 oz). 
Color: White. 
PATENTS:  U.S. Patents 5,693,943 z 6,211,522 z D445,709 
(another patent pending).