User's Manual
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Information contained herein is believed to be reliable, but Sensys Networks makes no warranties as to its accuracy or completeness. 
Copyright © 2014 Sensys Networks, Inc. • ALL RIGHTS RESERVED • P/N 153-240-020-013 Rev C
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Functional Specications Power, Physical, & Environmental
Compliance
interfaces
• to/from sensors via 802.15.4 PHY 
radio 
• to/from repeaters via 802.15.4 PHY 
radio
• to/from access point via 802.15.4 
PHY radio
over-the-air 
protocol
Sensys Networks NanoPower (SNP) 
protocol (TDMA)
physical layer 
protocol
IEEE 802.15.4 PHY
modulation
Direct Sequence Spread Spectrum 
Offset Quadrature Phase-Shift Keying 
(DSSS O-QPSK)
transmit/receive 
bit rate 
250 kbps
frequency band
2400 to 2483.5 MHz 
(ISM unlicensed band)
frequency 
channels
16
channel 
bandwidth
2 MHz
internal antenna 
type
microstrip patch antenna (behind 
front face panel)
antenna eld of 
view
±60° (azimuth & elevation)
nominal output 
power
3 dBm
spurious emissions
• 30 - 1000 MHz: < -36 dBm
• 1 - 12.75 GHz: < -30 dBm
• 1.8 - 1.9 GHz:  < -44 dBm
• 5.15 - 5.3 GHz: < -47 dBm
typical receive 
sensitivity
-101 dBm (PER ≤ 1%)
saturation 
(max input level)
≥ 10 dBm
power supply
• FLEX-RP-B: 
 – Li-SOCl2 3.6V battery pack
 ◦ nominal capacity: 57 Ah
• FLEX-RP-B-LL: 
 – Li-SOCl2 3.6V battery pack
 ◦ nominal capacity: 171 Ah
recommended 
battery/unit 
replacement
• FLEX-RP-B: battery replacement every 2 
years 
• FLEX-RP-B-LL: unit replacement every 
7 years
dimensions
• FLEX-RP-B: 6.50” x 6.55” x 6”   
(16.5 cm x 16.6 cm x 15.2 cm)
• FLEX-RP-B-LL: 6.50” x 6.55” x 6”                     
(16.5 cm x 16.6 cm x 15.2 cm)
• FLEX-ANT-1: 5.65” x 3.54” x 4.80”                        
(14.4 cm x 9 cm x 12.2 cm)
• FLEX-ANT-2: 9.5” x 9.5” x 4.38”            
(24.10 cm x 24.10 cm x 11.10 cm)
weight
• FLEX-RP-B: 2.31 lb ( 1.05 kg) 
• FLEX-RP-B-LL: 2.62 lb ( 1.19 kg)
• FLEX-ANT-1: 0.94 lb ( 0.43 kg)
• FLEX-ANT 2: 2.2 lb (1 kg)
environmental
• designed for weatherproof, outdoor 
operation
• NEMA Type 4x enclosure
• IP65 ingress protection
operating temp
-40ºF to 176ºF / -40ºC to +80ºC
safety
2006/95/EC
EMC
• FCC: This device complies with Part 15 of the FCC rules. Operation is subject to the following two 
conditions: (1) This device may not cause harmful interference, and (2) this device must accept 
any interference received, including interference that may cause undesired operation. Changes or 
modications not expressly approved by the party responsible for compliance could void the user’s 
authority to operate the equipment.
• CE0678
• 2004/108/EC 
FLEX-RP-B/FLEX-RP-B-LL
Products
Descriptions
FLEX-RP-B
FLEX Repeater with internal battery pack
FLEX-RP-B-LL
FLEX Repeater with long-life battery pack
FLEX-ANT-1
FLEX Standard External Antenna
FLEX-ANT-2
FLEX Long Range External Antenna
Available Products







