Call or send email for more information and pricing.
Distributors and OEM orders welcome. We make clocks and displays to your specifications.
KERA Technologies Inc.
Jumbo LED Digital Clocks with REMOTE CONTROL
SELENA
SELENA Clocks Accessories
APPLICATIONS

HOSPITAL
SCHOOL
AIRPORT
ARMY BASE
MARINE VESSELS
SHIPS, BOATS
SUBMARINES
BANK
STADIUM
GYM
CHURCH
SUBWAY STN.
BUS STN.
RAILWAY STN.
LED Clocks
and Timers
Sirens and Buzzers for programmable timers and counters
Toll Free:  1-866-829-4253
115 dB sound, 20 Watts power
5" x 8"  ABS plastic
6-15VDC supply
May be powered externally
or directly from the clock
if option # 729PS installed
Option # 729HP
High Power External 8 inch
All-Weather Horn / Buzzer / Siren
Option # 729
Medium Power External 4 inch
All-Weather Horn / Buzzer / Siren
Option # 729PZ
Medium Power External 2 inch
Piezo Horn / Buzzer / Siren
110 dB sound, 10 Watts power
4" Dia. ABS plastic
6-15VDC supply
May be powered externally
or directly from the clock
if option # 729PS installed
105 dB sound, 3 Watts power
2" Dia.  ABS plastic
6-15VDC supply
May be powered externally
or directly from the clock
if option # 729PS installed
Option # 729LPW
Low Power Piezo
Alarm Buzzer
Option # 729LPX
Low Power Piezo
Alarm Buzzer
110 dB sound, 0.5 Watt power
1.5" Dia. ABS plastic
6-24VDC supply
Powered directly from the clock.
110 dB sound, 0.5 Watt power
1.5" Dia. ABS plastic
6-24VDC supply
Powered directly from the clock
Temperature Probes and Sensors
The internal buzzer is not very loud and for applications where a loud Horn or Siren is needed,
an external Buzzer may be installed. It can be controlled by the clock internal relay that is operated automatically by the programmable timers, counters or temperature alarms.
All SELENA clocks include Internal Piezo Buzzers for Alarms
initiated by the clock timers, counters or temperature monitors..
The temperature monitoring and control options require an internal or external temperature sensor probe. The standard sensor normally included with the selected option may not be the most suitable model for each application and therefore a specific probe model may be ordered.
The selection below shows some of the available models and mounting accessories.
NA7100KB4100BLK


NA7100KB4100CHR


NA7100KB4100RDT



NA7100KB4100SQT


NA7100KB4100DPD


NA7100KB4100SHD



PT1000TC38550MM




NA7100KB4100PIPTR
SELECTION of standard Temperature Probes :
OPTIONAL Plastic or Metal (SS)
Sensor Probe Plate
(model PPP4 or PPS4 ).
OPTIONAL:
Sensor Probe Guard
model PG5 (black or grey ) .
Thermowell model:
SSTW-114-066-050NPT
Stainless Steel
Stem = 4-1/2"
Bore = 0.26"
1/2 NPT thread
Thermowell model:
SSTW-114-066-075NPT
Stainless Steel
Stem = 4-1/2"
Bore = 0.26"
3/4 NPT thread
Thermowell model:
SSTW-41-066-050NPT
Stainless Steel
Stem = 1-5/8"
Bore = 0.26"
1/2 NPT thread
Thermowell model:
SSTW-64-066-050NPT
Stainless Steel
Stem = 2-1/2"
Bore = 0.26"
1/2 NPT thread
Thermowell model:  BTW-100-05-075NPT
Brass, Stem = 4" , Bore = 0.2", 3/4 NPT thread
Thermowell model:  BTW-25-05-075NPT
Brass, Stem = 1" , Bore = 0.2", 3/4 NPT thread
Thermowell model:  BTW-25-05-025NPT
Brass, Stem = 1" , Bore = 0.2", 1/4 NPT thread
Protective Guards / Covers for clocks
In some installations like Gym, Bus Station, Swimming Pools etc..., the clock may have to be protected against accidental damage by a flying object or debris. The protective covers made out of Acrylic or Lexan are highly impact resistant and fully transparent.
SPECIFICATIONS:

Material: TRANSPARENT ACRYLIC or LEXAN
Wall Thickness:   3/16" (4.75 mm )

Dimensions for 4 inch, 4 and 6 diigits models:
Overall:   20" x 11" x 5"   (50.8 cm x 28 cm x 12.7 cm)
Inside:     19-5/8" x 10-5/8" x 4-13/16"   (50 cm x 27 cm x 12.2 cm)

Dimensions for 7 inch, 4 diigits models:
Overall:   36-3/8" x 16-3/8" x 14-3/16"   (92.4 cm x 41.6 cm x 36 cm)
Inside:     36" x 16" x 14"   (91.5 cm x 40.6 cm x 35.5 cm)

Dimensions for 7 inch, 6 diigits models:
Overall:   52-3/8" x 16-3/8" x 14-3/16"   (133 cm x 41.6 cm x 36 cm)
Inside:     52" x 16" x 14"   (132 cm x 40.6 cm x 35.5 cm)