diff --git a/_data/dxl_p_info.yml b/_data/dxl_p_info.yml
index 4cfee8161..9da0309d5 100644
--- a/_data/dxl_p_info.yml
+++ b/_data/dxl_p_info.yml
@@ -10,7 +10,7 @@ common_pro_plus_specs:
   radialload_54_en:   &radialload_54_en   "370 [N] (10 [mm] away from the horn)"
   axialload_42:       &axialload_42       "100 [N]"
   axialload_54:       &axialload_54       "130 [N]"
-  temperature:        &temperature        "-5 ~ 55 [°C]"
+  temperature:        &temperature        "-5 ~ +55 [°C]"
   voltage:            &voltage            "24.0 [V]"
   command:            &command            "Digital Packet"
   command_kr:         &command_kr         "디지털 패킷"
diff --git a/docs/en/dxl/ax/ax-12a.md b/docs/en/dxl/ax/ax-12a.md
index 93c23bba7..9991951b2 100644
--- a/docs/en/dxl/ax/ax-12a.md
+++ b/docs/en/dxl/ax/ax-12a.md
@@ -36,7 +36,7 @@ product_group: dxl_ax
 | Gear Ratio             | 254 : 1                                                                                                   |
 | Stall Torque           | 1.5 [N.m] (at 12 [V], 1.5 [A])                                                                            |
 | No Load Speed          | 59 [rev/min] (at 12V)                                                                                     |
-| Operating Temperature  | -5 [°C] ~ +70 [°C]                                                                                |
+| Operating Temperature  | -5 ~ +70 [°C]                                                                                |
 | Input Voltage          | 9.0 ~ 12.0 [V] (**Recommended : 11.1V**)                                                                  |
 | Command Signal         | Digital Packet                                                                                            |
 | Physical Connection    | TTL Level Multi Drop Bus<br />Half Duplex Asynchronous Serial Communication<br />(8bit, 1stop, No Parity) |