diff --git a/README.md b/README.md
index e40082c..575be19 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ Epson Printer Configuration tool via SNMP (TCP/IP)
 	- Read and write EEPROM addresses
 	- Dump a set of EEPROM addresses
 	- Reset ink waste
+    - Change power off timer
 	- Other admin stuffs and debug options
 - Command line tool (no GUI)
 - Python API interface
@@ -38,10 +39,11 @@ It is tested with Ubuntu / Windows Subsystem for Linux, Windows.
 ```
 usage: epson_print_conf.py [-h] -m MODEL -a HOSTNAME [-p PORT] [-i] [-q QUERY_NAME]
                            [--reset_waste_ink] [-d]
-                           [--write-first-ti-received-time YEAR MONTH DAY] [--dry-run]
-                           [-R ADDRESS_SET] [-W ADDRESS_VALUE_SET] [-e FIRST_ADDRESS LAST_ADDRESS]
-                           [--detect-key] [-S SEQUENCE_STRING] [-t TIMEOUT] [-r RETRIES]
-                           [-c CONFIG_FILE] [--simdata SIMDATA_FILE]
+                           [--write-first-ti-received-time YEAR MONTH DAY]
+                           [--write-poweroff-timer MINUTES] [--dry-run] [-R ADDRESS_SET]
+                           [-W ADDRESS_VALUE_SET] [-e FIRST_ADDRESS LAST_ADDRESS] [--detect-key]
+                           [-S SEQUENCE_STRING] [-t TIMEOUT] [-r RETRIES] [-c CONFIG_FILE]
+                           [--simdata SIMDATA_FILE]
 
 optional arguments:
   -h, --help            show this help message and exit
@@ -57,6 +59,8 @@ optional arguments:
   -d, --debug           Print debug information
   --write-first-ti-received-time YEAR MONTH DAY
                         Change the first TI received time
+  --write-poweroff-timer MINUTES
+                        Write poweroff tiler
   --dry-run             Dry-run change operations
   -R ADDRESS_SET, --read-eeprom ADDRESS_SET
                         Read the values of a list of printer EEPROM addreses. Format is: address
@@ -84,7 +88,7 @@ Epson Printer Configuration via SNMP (TCP/IP)
 
 Examples:
 
-```
+```bash
 # Print the status information (-i is not needed):
 python3 epson_print_conf.py -m XP-205 -a 192.168.1.87 -i
 
@@ -94,6 +98,9 @@ python3 epson_print_conf.py -m XP-205 -a 192.168.1.87 --reset_waste_ink
 # Change the first TI received time to 31 December 2016:
 python3 epson_print_conf.py -m XP-205 -a 192.168.1.87 --write-first-ti-received-time 2016 12 31
 
+# Change the power off timer to 15 minutes:
+python3 epson_print_conf.py -a 192.168.1.87 -m XP-205 --write-poweroff-timer 15
+
 # Detect the read_key via brute force:
 python3 epson_print_conf.py -m XP-205 -a 192.168.1.87 --detect-key
 
@@ -353,7 +360,8 @@ Example of advanced printer status with an XP-205 printer:
            'Timer cleaning counter': 4,
            'Total print page counter': 11569,
            'Total print pass counter': 514602,
-           'Total scan counter': 4973},
+           'Total scan counter': 4973,
+           'poweroff_timer': 30},
  'waste_ink_levels': {'borderless_waste': 4.72, 'main_waste': 90.8}}
  ```
 
diff --git a/epson_print_conf.py b/epson_print_conf.py
index 2185977..be572b8 100644
--- a/epson_print_conf.py
+++ b/epson_print_conf.py
@@ -136,6 +136,7 @@ class EpsonPrinter:
                 "First TI received time": [173, 172],
                 "Maintenance required level of 1st waste ink counter": [46],
                 "Maintenance required level of 2nd waste ink counter": [47],
+                "poweroff_timer": [359, 358],
             },
             "raw_waste_reset": {
                 24: 0, 25: 0, 30: 0,  # Data of 1st counter
@@ -1424,6 +1425,30 @@ def write_first_ti_received_time(
             return False
         return True
 
+    def write_poweroff_timer(self, mins: int) -> bool:
+        """Update power-off timer"""
+        if not self.parm:
+            logging.error("EpsonPrinter - invalid API usage")
+            return None
+        try:
+            msb = self.parm["stats"]["poweroff_timer"][0]
+            lsb = self.parm["stats"]["poweroff_timer"][1]
+        except KeyError:
+            logging.info("write_poweroff_timer: missing parameter")
+            return False
+        logging.debug(
+            "poweroff: %s %s = %s %s",
+            hex(mins // 256), hex(mins % 256), mins // 256, mins % 256)
+        if not self.write_eeprom(
+            msb, mins // 256, label="Write power off timer"
+        ):
+            return False
+        if not self.write_eeprom(
+            lsb, mins % 256, label="Write power off timer"
+        ):
+            return False
+        return True
+
     def list_known_keys(self):
         """ List all known read and write keys for all defined printers. """
         known_keys = []
@@ -1735,6 +1760,14 @@ def write_simdata(self, file):
         nargs=3,
         metavar=('YEAR', 'MONTH', 'DAY'),
     )
+    parser.add_argument(
+        '--write-poweroff-timer',
+        dest='poweroff',
+        type=int,
+        help='Write poweroff tiler',
+        nargs=1,
+        metavar=('MINUTES'),
+    )
     parser.add_argument(
         '--dry-run',
         dest='dry_run',
@@ -1896,6 +1929,19 @@ def write_simdata(self, file):
                     "Failed to write first TI received time."
                     " Check configuration."
                 )
+        if args.poweroff:
+            print_opt = True
+            if printer.write_poweroff_timer(args.poweroff[0]):
+                print(
+                    "Write power off timer done ("
+                    + str(args.poweroff[0])
+                    + " minutes)."
+                )
+            else:
+                print(
+                    "Failed to write power off timer."
+                    " Check configuration."
+                )
         if args.dump_eeprom:
             print_opt = True
             for addr, val in printer.dump_eeprom(