Suggested replacement code: A27A2N14

A27 temperature control modules
One stage thermostat

Model	Power supply	Setpoint range (° C)	Additional
A27A1N11	24 VAC / DC	-40 ... + 40	• models: field adjustable • differential: 0.5… 15K • SPDT contact 10 (5) A 250 VAC • setpoint shift: 0… 10K
A27A1N12	24 VAC / DC	10 ... 100
A27A2N11	230 VAC	-40 ... + 40
A27A2N12	230 VAC	10 ... 100
A27A2N14	230 VAC	0 ... 30
A27A2N15	230 VAC	-20 ... + 60

Two Stage Thermostat

Model	Power supply	Setpoint range (° C)	Additional features
A27A1N21	24 VAC / DC	-40 ... + 40	• models: field adjustable • differential: 0.5… 5K • 2xSPDT contact 10 (5) A 250 VAC • setpoint shift: 0… 10K • Δ setpoint: 0.5… 5K (A27AxN251: 0.5… 20K)
A27A1N22	24 VAC / DC	10 ... 100
A27A1N251	24 VAC / DC	-20 ... + 60
A27A2N21	230 VAC	-40 ... + 40
A27A2N22	230 VAC	10 ... 100
A27A2N25	230 VAC	-20 ... + 60
A27A2N251	230 VAC	-20 ... + 60
A27A2N26	230 VAC	20 ... 60
A27A2N27	230 VAC	-20… 20

Differential thermostat

Model	Power supply	Setpoint range (K)	Additional features
A27D1N11	24 VAC / DC	0 ... 10	• hysteresis: 0.5… 10K • SPDT contact 10 (5) A 250 VAC
A27D2N11	230 VAC	0 ... 10
A27D2N12	230 VAC	0 ... 20

frost protection thermostat

Model	Power supply	Setpoint range (° C)	Man/Auto	Additional features
A27M2N11	230 VAC	-10 ... + 5	man.reset	• differential: 1K fixed • SPDT contact 10 (5) A 250 VAC
A27F1N11	24 VAC / DC	-10 ... + 5	auto.reset
A27F2N11	230 VAC	-10 ... + 5	auto.reset

S27A stage modules
Stage module with stage setpoint related to thermostat setpoint

Model	Power supply	Power supply (K)	Additional features
S27A1	24 VAC / DC	0.5 ... 15	• models: field adjustable • differential: 0.5… 5K • 2xSPDT contact 10 (5) A 250 VAC • no additional sensor required • quick connector included
S27A2	230 VAC	0.5 ... 15

Stage module with independent stage setpoint

Model	Power supply	Number of outputs	Additional features
S27A3	230 VAC	1	• models: field adjustable • no additional sensor required • quick connector included • setpoint range -20… + 60 ° C
S27A4	230 VAC	2
S27A5	24 VAC / DC	1

D27A temperature display modules DIN rail mount

Model	Power supply	Display range (° C)	quick connector included	Additional features
D27A1N1	24 VAC	-40 ... + 99	No.	• can be used as a stand alone display or in conjunction with temperature control modules • setpoin read out
D27A2N1	230 VAC	-40 ... + 99	No.
D27A2N1Q	230 VAC	-40 ... + 99	Yes

D27A temperature display modules panel mount

Model	Power supply	With selector	Additional features
D27AF-9100	230 VAC	No.	• display range-40… +99 • display selector reads out up to temperatures
D27AG-9100	230 VAC	Yes

Y27L signal converter

Accessories

Model	Description
WRE027N600	quick connector for connecting modules

Discontinued Product: Johnson Controls A27AE-9301 Temperature Controller

Suggested replacement: Modular electronic temperature control system A27 JOHNSON CONTROLS