diff --git a/cmd_parser.c b/cmd_parser.c
index c0c549dc..cb6b6c00 100644
--- a/cmd_parser.c
+++ b/cmd_parser.c
@@ -1171,6 +1171,32 @@ err:
 }
 
 
+static void print_temperature(uint16_t reg)
+{
+	int16_t v;
+
+	reg_read(reg);
+	v = SFR_DATA_U16;
+	if (v < 0) {
+		write_char('-');
+		v = -v;
+	}
+	itoa(v >> 7);
+	write_char('.');
+	itoa(((v & 0x7f) * 10) >> 7);
+	print_string(" C\n");
+}
+
+
+void parse_temp(void)
+{
+	print_string("\nChip temperature: ");
+	print_temperature(RTL837X_TM_RESULT);
+	print_string("At power-on:      ");
+	print_temperature(RTL837X_TM_RESULT_POWERON);
+}
+
+
 void parse_sdsget(void)
 {
 	__xdata uint8_t sds_id, page, reg, hex_size;
@@ -1918,6 +1944,8 @@ void cmd_parser(void) __banked
 			parse_eee();
 		} else if (cmd_compare(0, "bw")) {
 			parse_bw();
+		} else if (cmd_compare(0, "temp")) {
+			parse_temp();
 		} else if (cmd_compare(0, "version")) {
 			print_sw_version();
 		} else if (cmd_compare(0, "time")) {
diff --git a/html/app.js b/html/app.js
index 32d75743..021ebb22 100644
--- a/html/app.js
+++ b/html/app.js
@@ -15,7 +15,7 @@ c_full:"full",c_half:"half",c_devices:"devices",c_yes:"yes",c_no:"no",
 d_ports:"Ports",d_ports_h:"click a port for details",d_system:"System",d_traffic:"Traffic",
 d_traffic_h:"packets/s, live",d_txpps:"TX pps",d_rxpps:"RX pps",d_txbad:"TX bad",d_rxbad:"RX bad",
 i_host:"Hostname",i_ip:"IP address",i_mask:"Netmask",i_gw:"Gateway",i_mac:"MAC",i_fw:"Firmware",
-i_built:"Built",i_hw:"Hardware",i_flash:"Flash",i_syslog:"Syslog",
+i_built:"Built",i_hw:"Hardware",i_temp:"Temperature",i_flash:"Flash",i_syslog:"Syslog",
 p_state:"State",p_disabled:"disabled",p_up:"up",p_txgb:"TX good / bad",p_rxgb:"RX good / bad",
 p_pkts:"pkts",p_module:"Module",p_temp:"Temperature",p_vcc:"Vcc",p_txbias:"TX bias",p_txpower:"TX power",
 p_rxpower:"RX power",p_txfault:"TX fault",p_txdis:"TX disabled",p_rxlos:"RX LOS",p_adv:"Advertising",
@@ -128,7 +128,7 @@ c_full:"全二重",c_half:"半二重",c_devices:"デバイス",c_yes:"はい",c_
 d_ports:"ポート",d_ports_h:"ポートをクリックすると詳細を表示",d_system:"システム",d_traffic:"トラフィック",
 d_traffic_h:"パケット/秒、リアルタイム",d_txpps:"TX pps",d_rxpps:"RX pps",d_txbad:"TX 異常",d_rxbad:"RX 異常",
 i_host:"ホスト名",i_ip:"IP アドレス",i_mask:"ネットマスク",i_gw:"ゲートウェイ",i_mac:"MAC",i_fw:"ファームウェア",
-i_built:"ビルド日",i_hw:"ハードウェア",i_flash:"フラッシュ",i_syslog:"Syslog",
+i_built:"ビルド日",i_hw:"ハードウェア",i_temp:"温度",i_flash:"フラッシュ",i_syslog:"Syslog",
 p_state:"状態",p_disabled:"無効",p_up:"アップ",p_txgb:"TX 正常 / 異常",p_rxgb:"RX 正常 / 異常",
 p_pkts:"pkts",p_module:"モジュール",p_temp:"温度",p_vcc:"電圧",p_txbias:"TX バイアス",p_txpower:"TX 電力",
 p_rxpower:"RX 電力",p_txfault:"TX 障害",p_txdis:"TX 無効",p_rxlos:"RX 信号ロス",p_adv:"アドバタイズ",
@@ -241,7 +241,7 @@ c_full:"全双工",c_half:"半双工",c_devices:"台设备",c_yes:"是",c_no:"
 d_ports:"端口",d_ports_h:"点击端口查看详情",d_system:"系统",d_traffic:"流量",
 d_traffic_h:"包/秒，实时",d_txpps:"TX pps",d_rxpps:"RX pps",d_txbad:"TX 错误",d_rxbad:"RX 错误",
 i_host:"主机名",i_ip:"IP 地址",i_mask:"子网掩码",i_gw:"网关",i_mac:"MAC",i_fw:"固件",
-i_built:"构建日期",i_hw:"硬件",i_flash:"Flash",i_syslog:"Syslog",
+i_built:"构建日期",i_hw:"硬件",i_temp:"温度",i_flash:"Flash",i_syslog:"Syslog",
 p_state:"状态",p_disabled:"已禁用",p_up:"已连接",p_txgb:"TX 正常 / 错误",p_rxgb:"RX 正常 / 错误",
 p_pkts:"个包",p_module:"模块",p_temp:"温度",p_vcc:"供电电压",p_txbias:"TX 偏置电流",p_txpower:"TX 光功率",
 p_rxpower:"RX 光功率",p_txfault:"TX 故障",p_txdis:"TX 禁用",p_rxlos:"RX 信号丢失",p_adv:"通告能力",
@@ -916,7 +916,7 @@ function portDetail(i){
 function renderInfo(){
   var m=[["i_host","hostname"],["i_ip","ip_address"],["i_mask","ip_netmask"],
     ["i_gw","ip_gateway"],["i_mac","mac_address"],["i_fw","sw_ver"],["i_built","build_date"],
-    ["i_hw","hw_ver"],["i_flash","flash_size"],["i_syslog","syslog_server"]];
+    ["i_hw","hw_ver"],["i_temp","chip_temp"],["i_flash","flash_size"],["i_syslog","syslog_server"]];
   var tb=$("sysinfo");tb.innerHTML="";
   m.forEach(function(r){
     var v=S.info[r[1]];
diff --git a/httpd/page_impl.c b/httpd/page_impl.c
index ac5118a4..a669eb83 100644
--- a/httpd/page_impl.c
+++ b/httpd/page_impl.c
@@ -135,6 +135,23 @@ void string_to_html(__code const char *s)
 	while (*s) char_to_html(*s++);
 }
 
+static void temp_to_html(void)
+{
+	int16_t v;
+
+	reg_read(RTL837X_TM_RESULT);
+	v = SFR_DATA_U16;
+	if (v < 0) {
+		char_to_html('-');
+		v = -v;
+	}
+	itoa_html(v >> 7);
+	char_to_html('.');
+	itoa_html(((v & 0x7f) * 10) >> 7);
+	char_to_html(' ');
+	char_to_html('C');
+}
+
 uint16_t stat_content(void)
 {
 	dbg_string("stat_content called\n");
@@ -282,6 +299,8 @@ void send_basic_info(void)
 	slen += strtox(outbuf + slen, BUILD_DATE);
 	slen += strtox(outbuf + slen, "\",\"hw_ver\":\"");
 	slen += strtox(outbuf + slen, machine.machine_name);
+	slen += strtox(outbuf + slen, "\",\"chip_temp\":\"");
+	temp_to_html();
 	slen += strtox(outbuf + slen, "\",\"flash_size\":\"");
 	string_to_html(get_flash_size_str());
 
diff --git a/rtl837x_init.c b/rtl837x_init.c
index b227e189..c7b7e71e 100644
--- a/rtl837x_init.c
+++ b/rtl837x_init.c
@@ -92,8 +92,18 @@ void static sds_init(void)
 }
 
 
+void static tm_init(void)
+{
+	reg_read_m(RTL837X_TM_CTRL2);
+	sfr_mask_data(0, TM_CTRL2_EN_LATCH, 0);
+	reg_write_m(RTL837X_TM_CTRL2);
+}
+
+
 void rtl8373_init(void) __banked
 {
+	tm_init();
+
 	print_string("\nrtl8373_init called\n");
 
 	// r65d8:3ffbedff R65d8-3ffbedff
@@ -191,6 +201,8 @@ void rtl8373_init(void) __banked
 
 void rtl8372_init(void) __banked
 {
+	tm_init();
+
 	print_string("\nrtl8372_init called\n");
 
 	sds_init();
diff --git a/rtl837x_regs.h b/rtl837x_regs.h
index c8735a03..744ab1a5 100644
--- a/rtl837x_regs.h
+++ b/rtl837x_regs.h
@@ -9,6 +9,13 @@
 #define RESET_SOC_BIT			0
 #define RESET_NIC_BIT			2
 
+#define RTL837X_TM_CTRL2		0x0338
+#define TM_CTRL2_EN_LATCH		0x04
+#define RTL837X_TM_RESULT		0x0340
+#define RTL837X_TM_RESULT_POWERON	0x0350
+// Temperature: 19 bit value, bits 18:3 in the low 16 bits of the register,
+// bits 2:0 in bits 18:16. Bit 18 signed, bits 17:10 degrees C, bits 9:0 fraction.
+
 #define RTL837X_REG_HW_CONF		0x6040
 // Bits 4 & 5: CLOCK DIVIDER from 125MHz for Timer