Honeywell Gent Vigilon Plus Manual page 131

IP21 Plate & Base
•
SQuad Sensor VAD's require an IP21 Plate to be fitted
( therefore cannot use the semi-flush mounting kit, S4-Flush )
•
SQuad Sensors without a VAD do not require the IP21 Plate.
•
IP21 plate provides compliance against water ingress to EN54 Part 23
•
Ordering codes:
▪ Standard base only – code S4-700
▪
IP21 Plate only
▪
IP21 Plate & base
– code S4-705
– code S4-701